Finding the Fourth Proportional to 90,532, 135,801.68 and 43,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,532 : 135,801.68 = 43,122.72 : x
2. Step 2: Convert to fraction form
   90,532/135,801.68 = 43,122.72/x
3. Step 3: Cross multiply
   90,532x = 135,801.68 × 43,122.72
4. Step 4: Simplify right side
   90,532x = 5,856,137,822.17
5. Step 5: Solve for x
   x = 5,856,137,822.17/90,532
6. Step 6: Final answer
   x = 64,685.83