Finding the Fourth Proportional to 78,796.16, 108,704.40 and 51,904.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,796.16 : 108,704.40 = 51,904.16 : x
2. Step 2: Convert to fraction form
   78,796.16/108,704.40 = 51,904.16/x
3. Step 3: Cross multiply
   78,796.16x = 108,704.40 × 51,904.16
4. Step 4: Simplify right side
   78,796.16x = 5,642,210,570.30
5. Step 5: Solve for x
   x = 5,642,210,570.30/78,796.16
6. Step 6: Final answer
   x = 71,605.15