Finding the Fourth Proportional to 91,815.50, 137,781.51 and 39,225.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,815.50 : 137,781.51 = 39,225.38 : x
2. Step 2: Convert to fraction form
   91,815.50/137,781.51 = 39,225.38/x
3. Step 3: Cross multiply
   91,815.50x = 137,781.51 × 39,225.38
4. Step 4: Simplify right side
   91,815.50x = 5,404,532,086.72
5. Step 5: Solve for x
   x = 5,404,532,086.72/91,815.50
6. Step 6: Final answer
   x = 58,862.96