Finding the Fourth Proportional to 86,055.48, 118,432.98 and 72,801

Step by Step Solution

1. Step 1: Write the proportion equation
   86,055.48 : 118,432.98 = 72,801 : x
2. Step 2: Convert to fraction form
   86,055.48/118,432.98 = 72,801/x
3. Step 3: Cross multiply
   86,055.48x = 118,432.98 × 72,801
4. Step 4: Simplify right side
   86,055.48x = 8,622,039,376.98
5. Step 5: Solve for x
   x = 8,622,039,376.98/86,055.48
6. Step 6: Final answer
   x = 100,191.64