Finding the Fourth Proportional to 91,705.62, 137,531.72 and 35,533.20

Step by Step Solution

1. Step 1: Write the proportion equation
   91,705.62 : 137,531.72 = 35,533.20 : x
2. Step 2: Convert to fraction form
   91,705.62/137,531.72 = 35,533.20/x
3. Step 3: Cross multiply
   91,705.62x = 137,531.72 × 35,533.20
4. Step 4: Simplify right side
   91,705.62x = 4,886,942,113.10
5. Step 5: Solve for x
   x = 4,886,942,113.10/91,705.62
6. Step 6: Final answer
   x = 53,289.45