Finding the Fourth Proportional to 91,499.28, 137,271.12 and 29,169.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,499.28 : 137,271.12 = 29,169.72 : x
2. Step 2: Convert to fraction form
   91,499.28/137,271.12 = 29,169.72/x
3. Step 3: Cross multiply
   91,499.28x = 137,271.12 × 29,169.72
4. Step 4: Simplify right side
   91,499.28x = 4,004,160,134.49
5. Step 5: Solve for x
   x = 4,004,160,134.49/91,499.28
6. Step 6: Final answer
   x = 43,761.66