Finding the Fourth Proportional to 123,794.94, 185,442.63 and 57,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,794.94 : 185,442.63 = 57,142.50 : x
2. Step 2: Convert to fraction form
   123,794.94/185,442.63 = 57,142.50/x
3. Step 3: Cross multiply
   123,794.94x = 185,442.63 × 57,142.50
4. Step 4: Simplify right side
   123,794.94x = 10,596,655,484.78
5. Step 5: Solve for x
   x = 10,596,655,484.78/123,794.94
6. Step 6: Final answer
   x = 85,598.45