Finding the Fourth Proportional to 52,578.56, 78,898.56 and 52,156.16

Step by Step Solution

1. Step 1: Write the proportion equation
   52,578.56 : 78,898.56 = 52,156.16 : x
2. Step 2: Convert to fraction form
   52,578.56/78,898.56 = 52,156.16/x
3. Step 3: Cross multiply
   52,578.56x = 78,898.56 × 52,156.16
4. Step 4: Simplify right side
   52,578.56x = 4,115,045,919.13
5. Step 5: Solve for x
   x = 4,115,045,919.13/52,578.56
6. Step 6: Final answer
   x = 78,264.71