Finding the Fourth Proportional to 91,399.80, 137,109.42 and 29,055.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,399.80 : 137,109.42 = 29,055.72 : x
2. Step 2: Convert to fraction form
   91,399.80/137,109.42 = 29,055.72/x
3. Step 3: Cross multiply
   91,399.80x = 137,109.42 × 29,055.72
4. Step 4: Simplify right side
   91,399.80x = 3,983,812,916.88
5. Step 5: Solve for x
   x = 3,983,812,916.88/91,399.80
6. Step 6: Final answer
   x = 43,586.67