Finding the Fourth Proportional to 84,478.56, 116,567.86 and 51,309.50

Step by Step Solution

1. Step 1: Write the proportion equation
   84,478.56 : 116,567.86 = 51,309.50 : x
2. Step 2: Convert to fraction form
   84,478.56/116,567.86 = 51,309.50/x
3. Step 3: Cross multiply
   84,478.56x = 116,567.86 × 51,309.50
4. Step 4: Simplify right side
   84,478.56x = 5,981,038,612.67
5. Step 5: Solve for x
   x = 5,981,038,612.67/84,478.56
6. Step 6: Final answer
   x = 70,799.49