Finding the Fourth Proportional to 78,683.30, 108,581.58 and 42,873.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,683.30 : 108,581.58 = 42,873.60 : x
2. Step 2: Convert to fraction form
   78,683.30/108,581.58 = 42,873.60/x
3. Step 3: Cross multiply
   78,683.30x = 108,581.58 × 42,873.60
4. Step 4: Simplify right side
   78,683.30x = 4,655,283,228.29
5. Step 5: Solve for x
   x = 4,655,283,228.29/78,683.30
6. Step 6: Final answer
   x = 59,164.82