Finding the Fourth Proportional to 260,469.88, 359,334.42 and 152,991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,469.88 : 359,334.42 = 152,991.50 : x
2. Step 2: Convert to fraction form
   260,469.88/359,334.42 = 152,991.50/x
3. Step 3: Cross multiply
   260,469.88x = 359,334.42 × 152,991.50
4. Step 4: Simplify right side
   260,469.88x = 54,975,111,917.43
5. Step 5: Solve for x
   x = 54,975,111,917.43/260,469.88
6. Step 6: Final answer
   x = 211,061.30