Finding the Fourth Proportional to 83,387.40, 115,074.42 and 45,661.32

Step by Step Solution

1. Step 1: Write the proportion equation
   83,387.40 : 115,074.42 = 45,661.32 : x
2. Step 2: Convert to fraction form
   83,387.40/115,074.42 = 45,661.32/x
3. Step 3: Cross multiply
   83,387.40x = 115,074.42 × 45,661.32
4. Step 4: Simplify right side
   83,387.40x = 5,254,449,915.43
5. Step 5: Solve for x
   x = 5,254,449,915.43/83,387.40
6. Step 6: Final answer
   x = 63,012.52