Finding the Fourth Proportional to 108,706.86, 162,978.06 and 71,276.36

Step by Step Solution

1. Step 1: Write the proportion equation
   108,706.86 : 162,978.06 = 71,276.36 : x
2. Step 2: Convert to fraction form
   108,706.86/162,978.06 = 71,276.36/x
3. Step 3: Cross multiply
   108,706.86x = 162,978.06 × 71,276.36
4. Step 4: Simplify right side
   108,706.86x = 11,616,482,061.77
5. Step 5: Solve for x
   x = 11,616,482,061.77/108,706.86
6. Step 6: Final answer
   x = 106,860.62