Finding the Fourth Proportional to 128,233.98, 176,957.39 and 70,870.34

Step by Step Solution

1. Step 1: Write the proportion equation
   128,233.98 : 176,957.39 = 70,870.34 : x
2. Step 2: Convert to fraction form
   128,233.98/176,957.39 = 70,870.34/x
3. Step 3: Cross multiply
   128,233.98x = 176,957.39 × 70,870.34
4. Step 4: Simplify right side
   128,233.98x = 12,541,029,968.86
5. Step 5: Solve for x
   x = 12,541,029,968.86/128,233.98
6. Step 6: Final answer
   x = 97,798.02