Finding the Fourth Proportional to 40,831.98, 61,235.01 and 13,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,831.98 : 61,235.01 = 13,123.50 : x
2. Step 2: Convert to fraction form
   40,831.98/61,235.01 = 13,123.50/x
3. Step 3: Cross multiply
   40,831.98x = 61,235.01 × 13,123.50
4. Step 4: Simplify right side
   40,831.98x = 803,617,653.74
5. Step 5: Solve for x
   x = 803,617,653.74/40,831.98
6. Step 6: Final answer
   x = 19,681.08