Finding the Fourth Proportional to 114,789.34, 158,406.69 and 66,387.61

Step by Step Solution

1. Step 1: Write the proportion equation
   114,789.34 : 158,406.69 = 66,387.61 : x
2. Step 2: Convert to fraction form
   114,789.34/158,406.69 = 66,387.61/x
3. Step 3: Cross multiply
   114,789.34x = 158,406.69 × 66,387.61
4. Step 4: Simplify right side
   114,789.34x = 10,516,241,557.11
5. Step 5: Solve for x
   x = 10,516,241,557.11/114,789.34
6. Step 6: Final answer
   x = 91,613.40