Finding the Fourth Proportional to 313,162.50, 469,821.78 and 91,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   313,162.50 : 469,821.78 = 91,546.50 : x
2. Step 2: Convert to fraction form
   313,162.50/469,821.78 = 91,546.50/x
3. Step 3: Cross multiply
   313,162.50x = 469,821.78 × 91,546.50
4. Step 4: Simplify right side
   313,162.50x = 43,010,539,582.77
5. Step 5: Solve for x
   x = 43,010,539,582.77/313,162.50
6. Step 6: Final answer
   x = 137,342.56