Finding the Fourth Proportional to 90,284.16, 135,437.76 and 34,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,284.16 : 135,437.76 = 34,158.72 : x
2. Step 2: Convert to fraction form
   90,284.16/135,437.76 = 34,158.72/x
3. Step 3: Cross multiply
   90,284.16x = 135,437.76 × 34,158.72
4. Step 4: Simplify right side
   90,284.16x = 4,626,380,521.27
5. Step 5: Solve for x
   x = 4,626,380,521.27/90,284.16
6. Step 6: Final answer
   x = 51,242.44