Finding the Fourth Proportional to 123,123.80, 184,696.50 and 90,252.92

Step by Step Solution

1. Step 1: Write the proportion equation
   123,123.80 : 184,696.50 = 90,252.92 : x
2. Step 2: Convert to fraction form
   123,123.80/184,696.50 = 90,252.92/x
3. Step 3: Cross multiply
   123,123.80x = 184,696.50 × 90,252.92
4. Step 4: Simplify right side
   123,123.80x = 16,669,398,438.78
5. Step 5: Solve for x
   x = 16,669,398,438.78/123,123.80
6. Step 6: Final answer
   x = 135,387.30