Finding the Fourth Proportional to 78,697.11, 108,598.84 and 42,886.35

Step by Step Solution

1. Step 1: Write the proportion equation
   78,697.11 : 108,598.84 = 42,886.35 : x
2. Step 2: Convert to fraction form
   78,697.11/108,598.84 = 42,886.35/x
3. Step 3: Cross multiply
   78,697.11x = 108,598.84 × 42,886.35
4. Step 4: Simplify right side
   78,697.11x = 4,657,407,861.83
5. Step 5: Solve for x
   x = 4,657,407,861.83/78,697.11
6. Step 6: Final answer
   x = 59,181.43