Finding the Fourth Proportional to 91,300.89, 126,030.33 and 81,723.86

Step by Step Solution

1. Step 1: Write the proportion equation
   91,300.89 : 126,030.33 = 81,723.86 : x
2. Step 2: Convert to fraction form
   91,300.89/126,030.33 = 81,723.86/x
3. Step 3: Cross multiply
   91,300.89x = 126,030.33 × 81,723.86
4. Step 4: Simplify right side
   91,300.89x = 10,299,685,044.67
5. Step 5: Solve for x
   x = 10,299,685,044.67/91,300.89
6. Step 6: Final answer
   x = 112,810.35