Finding the Fourth Proportional to 91,021.54, 136,480.92 and 37,683.40

Step by Step Solution

1. Step 1: Write the proportion equation
   91,021.54 : 136,480.92 = 37,683.40 : x
2. Step 2: Convert to fraction form
   91,021.54/136,480.92 = 37,683.40/x
3. Step 3: Cross multiply
   91,021.54x = 136,480.92 × 37,683.40
4. Step 4: Simplify right side
   91,021.54x = 5,143,065,100.73
5. Step 5: Solve for x
   x = 5,143,065,100.73/91,021.54
6. Step 6: Final answer
   x = 56,503.82