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Finding the Fourth Proportional to 538,498.33, 807,684.62 and 139,107.78

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Solution

The fourth proportional to 538,498.33, 807,684.62 and 139,107.78 is: 208,645.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,498.33 : 807,684.62 = 139,107.78 : x
  2. Step 2: Convert to fraction form
    538,498.33/807,684.62 = 139,107.78/x
  3. Step 3: Cross multiply
    538,498.33x = 807,684.62 × 139,107.78
  4. Step 4: Simplify right side
    538,498.33x = 112,355,213,732.81
  5. Step 5: Solve for x
    x = 112,355,213,732.81/538,498.33
  6. Step 6: Final answer
    x = 208,645.43

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