Finding the Fourth Proportional to 130,012.50, 195,018.78 and 31,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   130,012.50 : 195,018.78 = 31,516.50 : x
2. Step 2: Convert to fraction form
   130,012.50/195,018.78 = 31,516.50/x
3. Step 3: Cross multiply
   130,012.50x = 195,018.78 × 31,516.50
4. Step 4: Simplify right side
   130,012.50x = 6,146,309,379.87
5. Step 5: Solve for x
   x = 6,146,309,379.87/130,012.50
6. Step 6: Final answer
   x = 47,274.76