Finding the Fourth Proportional to 91,300.20, 136,970.70 and 32,137.80

Step by Step Solution

1. Step 1: Write the proportion equation
   91,300.20 : 136,970.70 = 32,137.80 : x
2. Step 2: Convert to fraction form
   91,300.20/136,970.70 = 32,137.80/x
3. Step 3: Cross multiply
   91,300.20x = 136,970.70 × 32,137.80
4. Step 4: Simplify right side
   91,300.20x = 4,401,936,962.46
5. Step 5: Solve for x
   x = 4,401,936,962.46/91,300.20
6. Step 6: Final answer
   x = 48,213.88