Finding the Fourth Proportional to 72,343.62, 108,384.21 and 53,415.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,343.62 : 108,384.21 = 53,415.15 : x
2. Step 2: Convert to fraction form
   72,343.62/108,384.21 = 53,415.15/x
3. Step 3: Cross multiply
   72,343.62x = 108,384.21 × 53,415.15
4. Step 4: Simplify right side
   72,343.62x = 5,789,358,834.78
5. Step 5: Solve for x
   x = 5,789,358,834.78/72,343.62
6. Step 6: Final answer
   x = 80,025.84