Finding the Fourth Proportional to 78,765.60, 108,697.91 and 42,956.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,765.60 : 108,697.91 = 42,956.92 : x
2. Step 2: Convert to fraction form
   78,765.60/108,697.91 = 42,956.92/x
3. Step 3: Cross multiply
   78,765.60x = 108,697.91 × 42,956.92
4. Step 4: Simplify right side
   78,765.60x = 4,669,327,424.04
5. Step 5: Solve for x
   x = 4,669,327,424.04/78,765.60
6. Step 6: Final answer
   x = 59,281.30