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Finding the Fourth Proportional to 112,663,978.20, 168,704,917.74 and 77,756,805.18

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Solution

The fourth proportional to 112,663,978.20, 168,704,917.74 and 77,756,805.18 is: 116,434,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,663,978.20 : 168,704,917.74 = 77,756,805.18 : x
  2. Step 2: Convert to fraction form
    112,663,978.20/168,704,917.74 = 77,756,805.18/x
  3. Step 3: Cross multiply
    112,663,978.20x = 168,704,917.74 × 77,756,805.18
  4. Step 4: Simplify right side
    112,663,978.20x = 13,117,955,421,617,108
  5. Step 5: Solve for x
    x = 13,117,955,421,617,108/112,663,978.20
  6. Step 6: Final answer
    x = 116,434,335.37

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