Finding the Fourth Proportional to 83,385.28, 115,071.72 and 45,144.83

Step by Step Solution

1. Step 1: Write the proportion equation
   83,385.28 : 115,071.72 = 45,144.83 : x
2. Step 2: Convert to fraction form
   83,385.28/115,071.72 = 45,144.83/x
3. Step 3: Cross multiply
   83,385.28x = 115,071.72 × 45,144.83
4. Step 4: Simplify right side
   83,385.28x = 5,194,892,661.85
5. Step 5: Solve for x
   x = 5,194,892,661.85/83,385.28
6. Step 6: Final answer
   x = 62,299.88