Finding the Fourth Proportional to 208,168.45, 312,061.30 and 75,016.15

Step by Step Solution

1. Step 1: Write the proportion equation
   208,168.45 : 312,061.30 = 75,016.15 : x
2. Step 2: Convert to fraction form
   208,168.45/312,061.30 = 75,016.15/x
3. Step 3: Cross multiply
   208,168.45x = 312,061.30 × 75,016.15
4. Step 4: Simplify right side
   208,168.45x = 23,409,637,290.00
5. Step 5: Solve for x
   x = 23,409,637,290.00/208,168.45
6. Step 6: Final answer
   x = 112,455.26