Finding the Fourth Proportional to 91,800.83, 126,613.72 and 66,402.47

Step by Step Solution

1. Step 1: Write the proportion equation
   91,800.83 : 126,613.72 = 66,402.47 : x
2. Step 2: Convert to fraction form
   91,800.83/126,613.72 = 66,402.47/x
3. Step 3: Cross multiply
   91,800.83x = 126,613.72 × 66,402.47
4. Step 4: Simplify right side
   91,800.83x = 8,407,463,743.89
5. Step 5: Solve for x
   x = 8,407,463,743.89/91,800.83
6. Step 6: Final answer
   x = 91,583.74