Finding the Fourth Proportional to 72,931.48, 100,664.17 and 47,501.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,931.48 : 100,664.17 = 47,501.22 : x
2. Step 2: Convert to fraction form
   72,931.48/100,664.17 = 47,501.22/x
3. Step 3: Cross multiply
   72,931.48x = 100,664.17 × 47,501.22
4. Step 4: Simplify right side
   72,931.48x = 4,781,670,752.38
5. Step 5: Solve for x
   x = 4,781,670,752.38/72,931.48
6. Step 6: Final answer
   x = 65,563.88