Finding the Fourth Proportional to 208,085.90, 312,129.72 and 50,314.10

Step by Step Solution

1. Step 1: Write the proportion equation
   208,085.90 : 312,129.72 = 50,314.10 : x
2. Step 2: Convert to fraction form
   208,085.90/312,129.72 = 50,314.10/x
3. Step 3: Cross multiply
   208,085.90x = 312,129.72 × 50,314.10
4. Step 4: Simplify right side
   208,085.90x = 15,704,524,384.40
5. Step 5: Solve for x
   x = 15,704,524,384.40/208,085.90
6. Step 6: Final answer
   x = 75,471.35