Finding the Fourth Proportional to 72,663.42, 108,948.33 and 30,570.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,663.42 : 108,948.33 = 30,570.78 : x
2. Step 2: Convert to fraction form
   72,663.42/108,948.33 = 30,570.78/x
3. Step 3: Cross multiply
   72,663.42x = 108,948.33 × 30,570.78
4. Step 4: Simplify right side
   72,663.42x = 3,330,635,427.80
5. Step 5: Solve for x
   x = 3,330,635,427.80/72,663.42
6. Step 6: Final answer
   x = 45,836.48