Finding the Fourth Proportional to 164,061.80, 245,574.30 and 128,810.60

Step by Step Solution

1. Step 1: Write the proportion equation
   164,061.80 : 245,574.30 = 128,810.60 : x
2. Step 2: Convert to fraction form
   164,061.80/245,574.30 = 128,810.60/x
3. Step 3: Cross multiply
   164,061.80x = 245,574.30 × 128,810.60
4. Step 4: Simplify right side
   164,061.80x = 31,632,572,927.58
5. Step 5: Solve for x
   x = 31,632,572,927.58/164,061.80
6. Step 6: Final answer
   x = 192,808.89