Finding the Fourth Proportional to 137,062.50, 189,146.25 and 77,446.50

Step by Step Solution

1. Step 1: Write the proportion equation
   137,062.50 : 189,146.25 = 77,446.50 : x
2. Step 2: Convert to fraction form
   137,062.50/189,146.25 = 77,446.50/x
3. Step 3: Cross multiply
   137,062.50x = 189,146.25 × 77,446.50
4. Step 4: Simplify right side
   137,062.50x = 14,648,715,050.63
5. Step 5: Solve for x
   x = 14,648,715,050.63/137,062.50
6. Step 6: Final answer
   x = 106,876.17