Finding the Fourth Proportional to 52,685.98, 78,992.01 and 19,401.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,685.98 : 78,992.01 = 19,401.78 : x
2. Step 2: Convert to fraction form
   52,685.98/78,992.01 = 19,401.78/x
3. Step 3: Cross multiply
   52,685.98x = 78,992.01 × 19,401.78
4. Step 4: Simplify right side
   52,685.98x = 1,532,585,451.67
5. Step 5: Solve for x
   x = 1,532,585,451.67/52,685.98
6. Step 6: Final answer
   x = 29,089.06