Finding the Fourth Proportional to 139,849.72, 209,780.34 and 73,252.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,849.72 : 209,780.34 = 73,252.60 : x
2. Step 2: Convert to fraction form
   139,849.72/209,780.34 = 73,252.60/x
3. Step 3: Cross multiply
   139,849.72x = 209,780.34 × 73,252.60
4. Step 4: Simplify right side
   139,849.72x = 15,366,955,333.88
5. Step 5: Solve for x
   x = 15,366,955,333.88/139,849.72
6. Step 6: Final answer
   x = 109,881.92