Finding the Fourth Proportional to 78,697.09, 108,598.81 and 42,886.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,697.09 : 108,598.81 = 42,886.33 : x
2. Step 2: Convert to fraction form
   78,697.09/108,598.81 = 42,886.33/x
3. Step 3: Cross multiply
   78,697.09x = 108,598.81 × 42,886.33
4. Step 4: Simplify right side
   78,697.09x = 4,657,404,024.55
5. Step 5: Solve for x
   x = 4,657,404,024.55/78,697.09
6. Step 6: Final answer
   x = 59,181.40