Finding the Fourth Proportional to 78,697.46, 108,599.33 and 42,886.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,697.46 : 108,599.33 = 42,886.70 : x
2. Step 2: Convert to fraction form
   78,697.46/108,599.33 = 42,886.70/x
3. Step 3: Cross multiply
   78,697.46x = 108,599.33 × 42,886.70
4. Step 4: Simplify right side
   78,697.46x = 4,657,466,857.38
5. Step 5: Solve for x
   x = 4,657,466,857.38/78,697.46
6. Step 6: Final answer
   x = 59,181.92