Finding the Fourth Proportional to 137,548.72, 189,826.32 and 77,123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   137,548.72 : 189,826.32 = 77,123.32 : x
2. Step 2: Convert to fraction form
   137,548.72/189,826.32 = 77,123.32/x
3. Step 3: Cross multiply
   137,548.72x = 189,826.32 × 77,123.32
4. Step 4: Simplify right side
   137,548.72x = 14,640,036,021.78
5. Step 5: Solve for x
   x = 14,640,036,021.78/137,548.72
6. Step 6: Final answer
   x = 106,435.28