Finding the Fourth Proportional to 109,061.20, 152,841.20 and 109,061.20

Step by Step Solution

1. Step 1: Write the proportion equation
   109,061.20 : 152,841.20 = 109,061.20 : x
2. Step 2: Convert to fraction form
   109,061.20/152,841.20 = 109,061.20/x
3. Step 3: Cross multiply
   109,061.20x = 152,841.20 × 109,061.20
4. Step 4: Simplify right side
   109,061.20x = 16,669,044,681.44
5. Step 5: Solve for x
   x = 16,669,044,681.44/109,061.20
6. Step 6: Final answer
   x = 152,841.20