Finding the Fourth Proportional to 91,597.75, 126,341.76 and 64,431.46

Step by Step Solution

1. Step 1: Write the proportion equation
   91,597.75 : 126,341.76 = 64,431.46 : x
2. Step 2: Convert to fraction form
   91,597.75/126,341.76 = 64,431.46/x
3. Step 3: Cross multiply
   91,597.75x = 126,341.76 × 64,431.46
4. Step 4: Simplify right side
   91,597.75x = 8,140,384,055.77
5. Step 5: Solve for x
   x = 8,140,384,055.77/91,597.75
6. Step 6: Final answer
   x = 88,871.00