Finding the Fourth Proportional to 88,328.40, 123,970.80 and 88,328.40

Step by Step Solution

1. Step 1: Write the proportion equation
   88,328.40 : 123,970.80 = 88,328.40 : x
2. Step 2: Convert to fraction form
   88,328.40/123,970.80 = 88,328.40/x
3. Step 3: Cross multiply
   88,328.40x = 123,970.80 × 88,328.40
4. Step 4: Simplify right side
   88,328.40x = 10,950,142,410.72
5. Step 5: Solve for x
   x = 10,950,142,410.72/88,328.40
6. Step 6: Final answer
   x = 123,970.80