Finding the Fourth Proportional to 90,150.74, 135,292.55 and 42,765.98

Step by Step Solution

1. Step 1: Write the proportion equation
   90,150.74 : 135,292.55 = 42,765.98 : x
2. Step 2: Convert to fraction form
   90,150.74/135,292.55 = 42,765.98/x
3. Step 3: Cross multiply
   90,150.74x = 135,292.55 × 42,765.98
4. Step 4: Simplify right side
   90,150.74x = 5,785,918,487.45
5. Step 5: Solve for x
   x = 5,785,918,487.45/90,150.74
6. Step 6: Final answer
   x = 64,180.49