Finding the Fourth Proportional to 91,196.10, 125,847.34 and 57,222.88

Step by Step Solution

1. Step 1: Write the proportion equation
   91,196.10 : 125,847.34 = 57,222.88 : x
2. Step 2: Convert to fraction form
   91,196.10/125,847.34 = 57,222.88/x
3. Step 3: Cross multiply
   91,196.10x = 125,847.34 × 57,222.88
4. Step 4: Simplify right side
   91,196.10x = 7,201,346,777.46
5. Step 5: Solve for x
   x = 7,201,346,777.46/91,196.10
6. Step 6: Final answer
   x = 78,965.51