Finding the Fourth Proportional to 102,480.83, 152,702.43 and 91,301.61

Step by Step Solution

1. Step 1: Write the proportion equation
   102,480.83 : 152,702.43 = 91,301.61 : x
2. Step 2: Convert to fraction form
   102,480.83/152,702.43 = 91,301.61/x
3. Step 3: Cross multiply
   102,480.83x = 152,702.43 × 91,301.61
4. Step 4: Simplify right side
   102,480.83x = 13,941,977,709.91
5. Step 5: Solve for x
   x = 13,941,977,709.91/102,480.83
6. Step 6: Final answer
   x = 136,044.75