Finding the Fourth Proportional to 91,429.61, 126,117.69 and 60,385.05

Step by Step Solution

1. Step 1: Write the proportion equation
   91,429.61 : 126,117.69 = 60,385.05 : x
2. Step 2: Convert to fraction form
   91,429.61/126,117.69 = 60,385.05/x
3. Step 3: Cross multiply
   91,429.61x = 126,117.69 × 60,385.05
4. Step 4: Simplify right side
   91,429.61x = 7,615,622,770.04
5. Step 5: Solve for x
   x = 7,615,622,770.04/91,429.61
6. Step 6: Final answer
   x = 83,294.93