Finding the Fourth Proportional to 137,344.48, 189,519.72 and 76,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   137,344.48 : 189,519.72 = 76,906.72 : x
2. Step 2: Convert to fraction form
   137,344.48/189,519.72 = 76,906.72/x
3. Step 3: Cross multiply
   137,344.48x = 189,519.72 × 76,906.72
4. Step 4: Simplify right side
   137,344.48x = 14,575,340,040.52
5. Step 5: Solve for x
   x = 14,575,340,040.52/137,344.48
6. Step 6: Final answer
   x = 106,122.50