Finding the Fourth Proportional to 139,472, 192,202.56 and 89,083.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,472 : 192,202.56 = 89,083.52 : x
2. Step 2: Convert to fraction form
   139,472/192,202.56 = 89,083.52/x
3. Step 3: Cross multiply
   139,472x = 192,202.56 × 89,083.52
4. Step 4: Simplify right side
   139,472x = 17,122,080,597.81
5. Step 5: Solve for x
   x = 17,122,080,597.81/139,472
6. Step 6: Final answer
   x = 122,763.57