Finding the Fourth Proportional to 131,784.30, 181,862.05 and 71,355

Step by Step Solution

1. Step 1: Write the proportion equation
   131,784.30 : 181,862.05 = 71,355 : x
2. Step 2: Convert to fraction form
   131,784.30/181,862.05 = 71,355/x
3. Step 3: Cross multiply
   131,784.30x = 181,862.05 × 71,355
4. Step 4: Simplify right side
   131,784.30x = 12,976,766,577.75
5. Step 5: Solve for x
   x = 12,976,766,577.75/131,784.30
6. Step 6: Final answer
   x = 98,469.75