Finding the Fourth Proportional to 91,475.80, 137,223.78 and 29,131.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,475.80 : 137,223.78 = 29,131.96 : x
2. Step 2: Convert to fraction form
   91,475.80/137,223.78 = 29,131.96/x
3. Step 3: Cross multiply
   91,475.80x = 137,223.78 × 29,131.96
4. Step 4: Simplify right side
   91,475.80x = 3,997,597,670.01
5. Step 5: Solve for x
   x = 3,997,597,670.01/91,475.80
6. Step 6: Final answer
   x = 43,701.15