Finding the Fourth Proportional to 90,109.53, 135,203.83 and 42,758.85

Step by Step Solution

1. Step 1: Write the proportion equation
   90,109.53 : 135,203.83 = 42,758.85 : x
2. Step 2: Convert to fraction form
   90,109.53/135,203.83 = 42,758.85/x
3. Step 3: Cross multiply
   90,109.53x = 135,203.83 × 42,758.85
4. Step 4: Simplify right side
   90,109.53x = 5,781,160,072.60
5. Step 5: Solve for x
   x = 5,781,160,072.60/90,109.53
6. Step 6: Final answer
   x = 64,157.04