Finding the Fourth Proportional to 152,700.72, 210,928.96 and 127,290.16

Step by Step Solution

1. Step 1: Write the proportion equation
   152,700.72 : 210,928.96 = 127,290.16 : x
2. Step 2: Convert to fraction form
   152,700.72/210,928.96 = 127,290.16/x
3. Step 3: Cross multiply
   152,700.72x = 210,928.96 × 127,290.16
4. Step 4: Simplify right side
   152,700.72x = 26,849,181,067.03
5. Step 5: Solve for x
   x = 26,849,181,067.03/152,700.72
6. Step 6: Final answer
   x = 175,828.78