Finding the Fourth Proportional to 128,066.02, 176,730.82 and 71,477.39

Step by Step Solution

1. Step 1: Write the proportion equation
   128,066.02 : 176,730.82 = 71,477.39 : x
2. Step 2: Convert to fraction form
   128,066.02/176,730.82 = 71,477.39/x
3. Step 3: Cross multiply
   128,066.02x = 176,730.82 × 71,477.39
4. Step 4: Simplify right side
   128,066.02x = 12,632,258,009.29
5. Step 5: Solve for x
   x = 12,632,258,009.29/128,066.02
6. Step 6: Final answer
   x = 98,638.64