Finding the Fourth Proportional to 260,404.32, 359,360.78 and 152,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   260,404.32 : 359,360.78 = 152,978.88 : x
2. Step 2: Convert to fraction form
   260,404.32/359,360.78 = 152,978.88/x
3. Step 3: Cross multiply
   260,404.32x = 359,360.78 × 152,978.88
4. Step 4: Simplify right side
   260,404.32x = 54,974,609,640.33
5. Step 5: Solve for x
   x = 54,974,609,640.33/260,404.32
6. Step 6: Final answer
   x = 211,112.51