Finding the Fourth Proportional to 128,061.84, 176,663.52 and 80,297.76

Step by Step Solution

1. Step 1: Write the proportion equation
   128,061.84 : 176,663.52 = 80,297.76 : x
2. Step 2: Convert to fraction form
   128,061.84/176,663.52 = 80,297.76/x
3. Step 3: Cross multiply
   128,061.84x = 176,663.52 × 80,297.76
4. Step 4: Simplify right side
   128,061.84x = 14,185,684,929.72
5. Step 5: Solve for x
   x = 14,185,684,929.72/128,061.84
6. Step 6: Final answer
   x = 110,772.15