Finding the Fourth Proportional to 91,441.80, 137,172.42 and 29,097.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,441.80 : 137,172.42 = 29,097.72 : x
2. Step 2: Convert to fraction form
   91,441.80/137,172.42 = 29,097.72/x
3. Step 3: Cross multiply
   91,441.80x = 137,172.42 × 29,097.72
4. Step 4: Simplify right side
   91,441.80x = 3,991,404,668.88
5. Step 5: Solve for x
   x = 3,991,404,668.88/91,441.80
6. Step 6: Final answer
   x = 43,649.67