Finding the Fourth Proportional to 128,243, 176,972.04 and 71,654.84

Step by Step Solution

1. Step 1: Write the proportion equation
   128,243 : 176,972.04 = 71,654.84 : x
2. Step 2: Convert to fraction form
   128,243/176,972.04 = 71,654.84/x
3. Step 3: Cross multiply
   128,243x = 176,972.04 × 71,654.84
4. Step 4: Simplify right side
   128,243x = 12,680,903,210.67
5. Step 5: Solve for x
   x = 12,680,903,210.67/128,243
6. Step 6: Final answer
   x = 98,881.84