Finding the Fourth Proportional to 90,991.72, 125,501.74 and 60,309.33

Step by Step Solution

1. Step 1: Write the proportion equation
   90,991.72 : 125,501.74 = 60,309.33 : x
2. Step 2: Convert to fraction form
   90,991.72/125,501.74 = 60,309.33/x
3. Step 3: Cross multiply
   90,991.72x = 125,501.74 × 60,309.33
4. Step 4: Simplify right side
   90,991.72x = 7,568,925,231.83
5. Step 5: Solve for x
   x = 7,568,925,231.83/90,991.72
6. Step 6: Final answer
   x = 83,182.57