Finding the Fourth Proportional to 72,047.54, 107,849.86 and 61,418.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,047.54 : 107,849.86 = 61,418.72 : x
2. Step 2: Convert to fraction form
   72,047.54/107,849.86 = 61,418.72/x
3. Step 3: Cross multiply
   72,047.54x = 107,849.86 × 61,418.72
4. Step 4: Simplify right side
   72,047.54x = 6,624,000,469.46
5. Step 5: Solve for x
   x = 6,624,000,469.46/72,047.54
6. Step 6: Final answer
   x = 91,939.30