Finding the Fourth Proportional to 83,385.16, 115,071.55 and 45,144.70

Step by Step Solution

1. Step 1: Write the proportion equation
   83,385.16 : 115,071.55 = 45,144.70 : x
2. Step 2: Convert to fraction form
   83,385.16/115,071.55 = 45,144.70/x
3. Step 3: Cross multiply
   83,385.16x = 115,071.55 × 45,144.70
4. Step 4: Simplify right side
   83,385.16x = 5,194,870,377.56
5. Step 5: Solve for x
   x = 5,194,870,377.56/83,385.16
6. Step 6: Final answer
   x = 62,299.70