Finding the Fourth Proportional to 52,702.84, 78,678.59 and 50,857.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,702.84 : 78,678.59 = 50,857.12 : x
2. Step 2: Convert to fraction form
   52,702.84/78,678.59 = 50,857.12/x
3. Step 3: Cross multiply
   52,702.84x = 78,678.59 × 50,857.12
4. Step 4: Simplify right side
   52,702.84x = 4,001,366,493.06
5. Step 5: Solve for x
   x = 4,001,366,493.06/52,702.84
6. Step 6: Final answer
   x = 75,923.17