Finding the Fourth Proportional to 72,429.80, 98,130.15 and 72,429.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.80 : 98,130.15 = 72,429.80 : x
2. Step 2: Convert to fraction form
   72,429.80/98,130.15 = 72,429.80/x
3. Step 3: Cross multiply
   72,429.80x = 98,130.15 × 72,429.80
4. Step 4: Simplify right side
   72,429.80x = 7,107,547,138.47
5. Step 5: Solve for x
   x = 7,107,547,138.47/72,429.80
6. Step 6: Final answer
   x = 98,130.15