Finding the Fourth Proportional to 108,387.72, 149,565.89 and 62,435.21

Step by Step Solution

1. Step 1: Write the proportion equation
   108,387.72 : 149,565.89 = 62,435.21 : x
2. Step 2: Convert to fraction form
   108,387.72/149,565.89 = 62,435.21/x
3. Step 3: Cross multiply
   108,387.72x = 149,565.89 × 62,435.21
4. Step 4: Simplify right side
   108,387.72x = 9,338,177,159.25
5. Step 5: Solve for x
   x = 9,338,177,159.25/108,387.72
6. Step 6: Final answer
   x = 86,155.31