Finding the Fourth Proportional to 91,385.69, 137,019.80 and 38,114.42

Step by Step Solution

1. Step 1: Write the proportion equation
   91,385.69 : 137,019.80 = 38,114.42 : x
2. Step 2: Convert to fraction form
   91,385.69/137,019.80 = 38,114.42/x
3. Step 3: Cross multiply
   91,385.69x = 137,019.80 × 38,114.42
4. Step 4: Simplify right side
   91,385.69x = 5,222,429,615.70
5. Step 5: Solve for x
   x = 5,222,429,615.70/91,385.69
6. Step 6: Final answer
   x = 57,147.13