Finding the Fourth Proportional to 78,071.93, 107,791.29 and 52,616.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,071.93 : 107,791.29 = 52,616.15 : x
2. Step 2: Convert to fraction form
   78,071.93/107,791.29 = 52,616.15/x
3. Step 3: Cross multiply
   78,071.93x = 107,791.29 × 52,616.15
4. Step 4: Simplify right side
   78,071.93x = 5,671,561,881.30
5. Step 5: Solve for x
   x = 5,671,561,881.30/78,071.93
6. Step 6: Final answer
   x = 72,645.34