Finding the Fourth Proportional to 128,275.32, 177,004.61 and 70,906.89

Step by Step Solution

1. Step 1: Write the proportion equation
   128,275.32 : 177,004.61 = 70,906.89 : x
2. Step 2: Convert to fraction form
   128,275.32/177,004.61 = 70,906.89/x
3. Step 3: Cross multiply
   128,275.32x = 177,004.61 × 70,906.89
4. Step 4: Simplify right side
   128,275.32x = 12,550,846,056.23
5. Step 5: Solve for x
   x = 12,550,846,056.23/128,275.32
6. Step 6: Final answer
   x = 97,843.03