Finding the Fourth Proportional to 123,758.48, 185,607.98 and 57,134.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,758.48 : 185,607.98 = 57,134.62 : x
2. Step 2: Convert to fraction form
   123,758.48/185,607.98 = 57,134.62/x
3. Step 3: Cross multiply
   123,758.48x = 185,607.98 × 57,134.62
4. Step 4: Simplify right side
   123,758.48x = 10,604,640,683.51
5. Step 5: Solve for x
   x = 10,604,640,683.51/123,758.48
6. Step 6: Final answer
   x = 85,688.19