Finding the Fourth Proportional to 121,185.34, 181,507.31 and 87,828.83

Step by Step Solution

1. Step 1: Write the proportion equation
   121,185.34 : 181,507.31 = 87,828.83 : x
2. Step 2: Convert to fraction form
   121,185.34/181,507.31 = 87,828.83/x
3. Step 3: Cross multiply
   121,185.34x = 181,507.31 × 87,828.83
4. Step 4: Simplify right side
   121,185.34x = 15,941,573,327.07
5. Step 5: Solve for x
   x = 15,941,573,327.07/121,185.34
6. Step 6: Final answer
   x = 131,547.05