Finding the Fourth Proportional to 52,716.52, 78,880.02 and 31,669.30

Step by Step Solution

1. Step 1: Write the proportion equation
   52,716.52 : 78,880.02 = 31,669.30 : x
2. Step 2: Convert to fraction form
   52,716.52/78,880.02 = 31,669.30/x
3. Step 3: Cross multiply
   52,716.52x = 78,880.02 × 31,669.30
4. Step 4: Simplify right side
   52,716.52x = 2,498,075,017.39
5. Step 5: Solve for x
   x = 2,498,075,017.39/52,716.52
6. Step 6: Final answer
   x = 47,386.95