Finding the Fourth Proportional to 52,796.89, 78,998.50 and 52,206.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,796.89 : 78,998.50 = 52,206.40 : x
2. Step 2: Convert to fraction form
   52,796.89/78,998.50 = 52,206.40/x
3. Step 3: Cross multiply
   52,796.89x = 78,998.50 × 52,206.40
4. Step 4: Simplify right side
   52,796.89x = 4,124,226,962.39
5. Step 5: Solve for x
   x = 4,124,226,962.39/52,796.89
6. Step 6: Final answer
   x = 78,114.96