Finding the Fourth Proportional to 419,111.99, 628,761.72 and 152,872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   419,111.99 : 628,761.72 = 152,872.50 : x
2. Step 2: Convert to fraction form
   419,111.99/628,761.72 = 152,872.50/x
3. Step 3: Cross multiply
   419,111.99x = 628,761.72 × 152,872.50
4. Step 4: Simplify right side
   419,111.99x = 96,120,376,040.70
5. Step 5: Solve for x
   x = 96,120,376,040.70/419,111.99
6. Step 6: Final answer
   x = 229,342.94