Finding the Fourth Proportional to 72,047.96, 99,427.77 and 39,782.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,047.96 : 99,427.77 = 39,782.49 : x
2. Step 2: Convert to fraction form
   72,047.96/99,427.77 = 39,782.49/x
3. Step 3: Cross multiply
   72,047.96x = 99,427.77 × 39,782.49
4. Step 4: Simplify right side
   72,047.96x = 3,955,484,284.34
5. Step 5: Solve for x
   x = 3,955,484,284.34/72,047.96
6. Step 6: Final answer
   x = 54,900.71