Finding the Fourth Proportional to 87,159.57, 120,300.72 and 53,196.15

Step by Step Solution

1. Step 1: Write the proportion equation
   87,159.57 : 120,300.72 = 53,196.15 : x
2. Step 2: Convert to fraction form
   87,159.57/120,300.72 = 53,196.15/x
3. Step 3: Cross multiply
   87,159.57x = 120,300.72 × 53,196.15
4. Step 4: Simplify right side
   87,159.57x = 6,399,535,146.23
5. Step 5: Solve for x
   x = 6,399,535,146.23/87,159.57
6. Step 6: Final answer
   x = 73,423.21