Finding the Fourth Proportional to 124,356.78, 186,557.32 and 57,871.98

Step by Step Solution

1. Step 1: Write the proportion equation
   124,356.78 : 186,557.32 = 57,871.98 : x
2. Step 2: Convert to fraction form
   124,356.78/186,557.32 = 57,871.98/x
3. Step 3: Cross multiply
   124,356.78x = 186,557.32 × 57,871.98
4. Step 4: Simplify right side
   124,356.78x = 10,796,441,491.89
5. Step 5: Solve for x
   x = 10,796,441,491.89/124,356.78
6. Step 6: Final answer
   x = 86,818.28