Finding the Fourth Proportional to 87,391.98, 130,805.98 and 45,213.98

Step by Step Solution

1. Step 1: Write the proportion equation
   87,391.98 : 130,805.98 = 45,213.98 : x
2. Step 2: Convert to fraction form
   87,391.98/130,805.98 = 45,213.98/x
3. Step 3: Cross multiply
   87,391.98x = 130,805.98 × 45,213.98
4. Step 4: Simplify right side
   87,391.98x = 5,914,258,196.54
5. Step 5: Solve for x
   x = 5,914,258,196.54/87,391.98
6. Step 6: Final answer
   x = 67,675.07