Finding the Fourth Proportional to 92,059.56, 137,322.64 and 90,535.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,059.56 : 137,322.64 = 90,535.50 : x
2. Step 2: Convert to fraction form
   92,059.56/137,322.64 = 90,535.50/x
3. Step 3: Cross multiply
   92,059.56x = 137,322.64 × 90,535.50
4. Step 4: Simplify right side
   92,059.56x = 12,432,573,600.67
5. Step 5: Solve for x
   x = 12,432,573,600.67/92,059.56
6. Step 6: Final answer
   x = 135,049.24