Finding the Fourth Proportional to 128,368.82, 177,089.32 and 83,061.42

Step by Step Solution

1. Step 1: Write the proportion equation
   128,368.82 : 177,089.32 = 83,061.42 : x
2. Step 2: Convert to fraction form
   128,368.82/177,089.32 = 83,061.42/x
3. Step 3: Cross multiply
   128,368.82x = 177,089.32 × 83,061.42
4. Step 4: Simplify right side
   128,368.82x = 14,709,290,386.03
5. Step 5: Solve for x
   x = 14,709,290,386.03/128,368.82
6. Step 6: Final answer
   x = 114,586.16