Finding the Fourth Proportional to 67,075.20, 100,807.20 and 58,521.60

Step by Step Solution

1. Step 1: Write the proportion equation
   67,075.20 : 100,807.20 = 58,521.60 : x
2. Step 2: Convert to fraction form
   67,075.20/100,807.20 = 58,521.60/x
3. Step 3: Cross multiply
   67,075.20x = 100,807.20 × 58,521.60
4. Step 4: Simplify right side
   67,075.20x = 5,899,398,635.52
5. Step 5: Solve for x
   x = 5,899,398,635.52/67,075.20
6. Step 6: Final answer
   x = 87,952.01