Finding the Fourth Proportional to 91,782.29, 137,686.56 and 40,548.02

Step by Step Solution

1. Step 1: Write the proportion equation
   91,782.29 : 137,686.56 = 40,548.02 : x
2. Step 2: Convert to fraction form
   91,782.29/137,686.56 = 40,548.02/x
3. Step 3: Cross multiply
   91,782.29x = 137,686.56 × 40,548.02
4. Step 4: Simplify right side
   91,782.29x = 5,582,916,700.18
5. Step 5: Solve for x
   x = 5,582,916,700.18/91,782.29
6. Step 6: Final answer
   x = 60,827.82