Finding the Fourth Proportional to 152,111.64, 209,871.18 and 90,850.62

Step by Step Solution

1. Step 1: Write the proportion equation
   152,111.64 : 209,871.18 = 90,850.62 : x
2. Step 2: Convert to fraction form
   152,111.64/209,871.18 = 90,850.62/x
3. Step 3: Cross multiply
   152,111.64x = 209,871.18 × 90,850.62
4. Step 4: Simplify right side
   152,111.64x = 19,066,926,823.13
5. Step 5: Solve for x
   x = 19,066,926,823.13/152,111.64
6. Step 6: Final answer
   x = 125,348.24