Finding the Fourth Proportional to 137,033.10, 189,109.06 and 76,613.78

Step by Step Solution

1. Step 1: Write the proportion equation
   137,033.10 : 189,109.06 = 76,613.78 : x
2. Step 2: Convert to fraction form
   137,033.10/189,109.06 = 76,613.78/x
3. Step 3: Cross multiply
   137,033.10x = 189,109.06 × 76,613.78
4. Step 4: Simplify right side
   137,033.10x = 14,488,359,918.85
5. Step 5: Solve for x
   x = 14,488,359,918.85/137,033.10
6. Step 6: Final answer
   x = 105,728.91