Finding the Fourth Proportional to 72,641.47, 100,227.58 and 42,409.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,641.47 : 100,227.58 = 42,409.48 : x
2. Step 2: Convert to fraction form
   72,641.47/100,227.58 = 42,409.48/x
3. Step 3: Cross multiply
   72,641.47x = 100,227.58 × 42,409.48
4. Step 4: Simplify right side
   72,641.47x = 4,250,599,549.46
5. Step 5: Solve for x
   x = 4,250,599,549.46/72,641.47
6. Step 6: Final answer
   x = 58,514.78