Finding the Fourth Proportional to 83,385.59, 115,072.19 and 45,145.16

Step by Step Solution

1. Step 1: Write the proportion equation
   83,385.59 : 115,072.19 = 45,145.16 : x
2. Step 2: Convert to fraction form
   83,385.59/115,072.19 = 45,145.16/x
3. Step 3: Cross multiply
   83,385.59x = 115,072.19 × 45,145.16
4. Step 4: Simplify right side
   83,385.59x = 5,194,952,429.10
5. Step 5: Solve for x
   x = 5,194,952,429.10/83,385.59
6. Step 6: Final answer
   x = 62,300.36