Finding the Fourth Proportional to 90,534, 135,804.68 and 43,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,534 : 135,804.68 = 43,124.72 : x
2. Step 2: Convert to fraction form
   90,534/135,804.68 = 43,124.72/x
3. Step 3: Cross multiply
   90,534x = 135,804.68 × 43,124.72
4. Step 4: Simplify right side
   90,534x = 5,856,538,799.69
5. Step 5: Solve for x
   x = 5,856,538,799.69/90,534
6. Step 6: Final answer
   x = 64,688.83