Finding the Fourth Proportional to 90,656.76, 135,787.86 and 43,811

Step by Step Solution

1. Step 1: Write the proportion equation
   90,656.76 : 135,787.86 = 43,811 : x
2. Step 2: Convert to fraction form
   90,656.76/135,787.86 = 43,811/x
3. Step 3: Cross multiply
   90,656.76x = 135,787.86 × 43,811
4. Step 4: Simplify right side
   90,656.76x = 5,949,001,934.46
5. Step 5: Solve for x
   x = 5,949,001,934.46/90,656.76
6. Step 6: Final answer
   x = 65,621.16