Finding the Fourth Proportional to 108,566.76, 162,609.54 and 83,421.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,566.76 : 162,609.54 = 83,421.72 : x
2. Step 2: Convert to fraction form
   108,566.76/162,609.54 = 83,421.72/x
3. Step 3: Cross multiply
   108,566.76x = 162,609.54 × 83,421.72
4. Step 4: Simplify right side
   108,566.76x = 13,565,167,515.21
5. Step 5: Solve for x
   x = 13,565,167,515.21/108,566.76
6. Step 6: Final answer
   x = 124,947.71