Finding the Fourth Proportional to 92,613.98, 138,601.13 and 57,061.56

Step by Step Solution

1. Step 1: Write the proportion equation
   92,613.98 : 138,601.13 = 57,061.56 : x
2. Step 2: Convert to fraction form
   92,613.98/138,601.13 = 57,061.56/x
3. Step 3: Cross multiply
   92,613.98x = 138,601.13 × 57,061.56
4. Step 4: Simplify right side
   92,613.98x = 7,908,796,930.01
5. Step 5: Solve for x
   x = 7,908,796,930.01/92,613.98
6. Step 6: Final answer
   x = 85,395.28