Finding the Fourth Proportional to 91,606.60, 137,103.72 and 52,153.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,606.60 : 137,103.72 = 52,153.12 : x
2. Step 2: Convert to fraction form
   91,606.60/137,103.72 = 52,153.12/x
3. Step 3: Cross multiply
   91,606.60x = 137,103.72 × 52,153.12
4. Step 4: Simplify right side
   91,606.60x = 7,150,386,761.61
5. Step 5: Solve for x
   x = 7,150,386,761.61/91,606.60
6. Step 6: Final answer
   x = 78,055.37