Finding the Fourth Proportional to 91,213.42, 136,810.50 and 43,170.52

Step by Step Solution

1. Step 1: Write the proportion equation
   91,213.42 : 136,810.50 = 43,170.52 : x
2. Step 2: Convert to fraction form
   91,213.42/136,810.50 = 43,170.52/x
3. Step 3: Cross multiply
   91,213.42x = 136,810.50 × 43,170.52
4. Step 4: Simplify right side
   91,213.42x = 5,906,180,426.46
5. Step 5: Solve for x
   x = 5,906,180,426.46/91,213.42
6. Step 6: Final answer
   x = 64,751.22