Finding the Fourth Proportional to 78,707.02, 108,615.77 and 42,897.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.02 : 108,615.77 = 42,897.06 : x
2. Step 2: Convert to fraction form
   78,707.02/108,615.77 = 42,897.06/x
3. Step 3: Cross multiply
   78,707.02x = 108,615.77 × 42,897.06
4. Step 4: Simplify right side
   78,707.02x = 4,659,297,202.64
5. Step 5: Solve for x
   x = 4,659,297,202.64/78,707.02
6. Step 6: Final answer
   x = 59,197.99