Finding the Fourth Proportional to 137,466.50, 189,711.57 and 77,056.61

Step by Step Solution

1. Step 1: Write the proportion equation
   137,466.50 : 189,711.57 = 77,056.61 : x
2. Step 2: Convert to fraction form
   137,466.50/189,711.57 = 77,056.61/x
3. Step 3: Cross multiply
   137,466.50x = 189,711.57 × 77,056.61
4. Step 4: Simplify right side
   137,466.50x = 14,618,529,513.42
5. Step 5: Solve for x
   x = 14,618,529,513.42/137,466.50
6. Step 6: Final answer
   x = 106,342.49