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Finding the Fourth Proportional to 98,711.36, 136,194.72 and 56,254.40

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Solution

The fourth proportional to 98,711.36, 136,194.72 and 56,254.40 is: 77,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,711.36 : 136,194.72 = 56,254.40 : x
  2. Step 2: Convert to fraction form
    98,711.36/136,194.72 = 56,254.40/x
  3. Step 3: Cross multiply
    98,711.36x = 136,194.72 × 56,254.40
  4. Step 4: Simplify right side
    98,711.36x = 7,661,552,256.77
  5. Step 5: Solve for x
    x = 7,661,552,256.77/98,711.36
  6. Step 6: Final answer
    x = 77,615.71

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