Finding the Fourth Proportional to 152,789.48, 229,180.62 and 90,007.76

Step by Step Solution

1. Step 1: Write the proportion equation
   152,789.48 : 229,180.62 = 90,007.76 : x
2. Step 2: Convert to fraction form
   152,789.48/229,180.62 = 90,007.76/x
3. Step 3: Cross multiply
   152,789.48x = 229,180.62 × 90,007.76
4. Step 4: Simplify right side
   152,789.48x = 20,628,034,241.61
5. Step 5: Solve for x
   x = 20,628,034,241.61/152,789.48
6. Step 6: Final answer
   x = 135,009.52