Finding the Fourth Proportional to 52,068.50, 78,126.55 and 28,340.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,068.50 : 78,126.55 = 28,340.50 : x
2. Step 2: Convert to fraction form
   52,068.50/78,126.55 = 28,340.50/x
3. Step 3: Cross multiply
   52,068.50x = 78,126.55 × 28,340.50
4. Step 4: Simplify right side
   52,068.50x = 2,214,145,490.28
5. Step 5: Solve for x
   x = 2,214,145,490.28/52,068.50
6. Step 6: Final answer
   x = 42,523.70