Finding the Fourth Proportional to 91,569.60, 137,353.92 and 29,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,569.60 : 137,353.92 = 29,238.72 : x
2. Step 2: Convert to fraction form
   91,569.60/137,353.92 = 29,238.72/x
3. Step 3: Cross multiply
   91,569.60x = 137,353.92 × 29,238.72
4. Step 4: Simplify right side
   91,569.60x = 4,016,052,807.78
5. Step 5: Solve for x
   x = 4,016,052,807.78/91,569.60
6. Step 6: Final answer
   x = 43,857.93