Finding the Fourth Proportional to 78,727.60, 108,641.56 and 42,917.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,727.60 : 108,641.56 = 42,917.04 : x
2. Step 2: Convert to fraction form
   78,727.60/108,641.56 = 42,917.04/x
3. Step 3: Cross multiply
   78,727.60x = 108,641.56 × 42,917.04
4. Step 4: Simplify right side
   78,727.60x = 4,662,574,176.18
5. Step 5: Solve for x
   x = 4,662,574,176.18/78,727.60
6. Step 6: Final answer
   x = 59,224.14