Finding the Fourth Proportional to 152,617.61, 210,636.90 and 88,943.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,617.61 : 210,636.90 = 88,943.10 : x
2. Step 2: Convert to fraction form
   152,617.61/210,636.90 = 88,943.10/x
3. Step 3: Cross multiply
   152,617.61x = 210,636.90 × 88,943.10
4. Step 4: Simplify right side
   152,617.61x = 18,734,698,860.39
5. Step 5: Solve for x
   x = 18,734,698,860.39/152,617.61
6. Step 6: Final answer
   x = 122,755.82