Finding the Fourth Proportional to 128,147.27, 176,842.52 and 70,790.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128,147.27 : 176,842.52 = 70,790.52 : x
2. Step 2: Convert to fraction form
   128,147.27/176,842.52 = 70,790.52/x
3. Step 3: Cross multiply
   128,147.27x = 176,842.52 × 70,790.52
4. Step 4: Simplify right side
   128,147.27x = 12,518,774,523.58
5. Step 5: Solve for x
   x = 12,518,774,523.58/128,147.27
6. Step 6: Final answer
   x = 97,690.53