Finding the Fourth Proportional to 72,601.50, 100,201.72 and 42,386.71

Step by Step Solution

1. Step 1: Write the proportion equation
   72,601.50 : 100,201.72 = 42,386.71 : x
2. Step 2: Convert to fraction form
   72,601.50/100,201.72 = 42,386.71/x
3. Step 3: Cross multiply
   72,601.50x = 100,201.72 × 42,386.71
4. Step 4: Simplify right side
   72,601.50x = 4,247,221,247.14
5. Step 5: Solve for x
   x = 4,247,221,247.14/72,601.50
6. Step 6: Final answer
   x = 58,500.46