Finding the Fourth Proportional to 139,882.72, 193,038.20 and 76,220.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,882.72 : 193,038.20 = 76,220.55 : x
2. Step 2: Convert to fraction form
   139,882.72/193,038.20 = 76,220.55/x
3. Step 3: Cross multiply
   139,882.72x = 193,038.20 × 76,220.55
4. Step 4: Simplify right side
   139,882.72x = 14,713,476,428.72
5. Step 5: Solve for x
   x = 14,713,476,428.72/139,882.72
6. Step 6: Final answer
   x = 105,184.37