Finding the Fourth Proportional to 175,870.72, 242,713.50 and 99,363.28

Step by Step Solution

1. Step 1: Write the proportion equation
   175,870.72 : 242,713.50 = 99,363.28 : x
2. Step 2: Convert to fraction form
   175,870.72/242,713.50 = 99,363.28/x
3. Step 3: Cross multiply
   175,870.72x = 242,713.50 × 99,363.28
4. Step 4: Simplify right side
   175,870.72x = 24,116,809,460.28
5. Step 5: Solve for x
   x = 24,116,809,460.28/175,870.72
6. Step 6: Final answer
   x = 137,128.05