Finding the Fourth Proportional to 90,532.50, 135,802.43 and 43,123.22

Step by Step Solution

1. Step 1: Write the proportion equation
   90,532.50 : 135,802.43 = 43,123.22 : x
2. Step 2: Convert to fraction form
   90,532.50/135,802.43 = 43,123.22/x
3. Step 3: Cross multiply
   90,532.50x = 135,802.43 × 43,123.22
4. Step 4: Simplify right side
   90,532.50x = 5,856,238,065.42
5. Step 5: Solve for x
   x = 5,856,238,065.42/90,532.50
6. Step 6: Final answer
   x = 64,686.58