Finding the Fourth Proportional to 153,956.10, 231,128.55 and 82,935.30

Step by Step Solution

1. Step 1: Write the proportion equation
   153,956.10 : 231,128.55 = 82,935.30 : x
2. Step 2: Convert to fraction form
   153,956.10/231,128.55 = 82,935.30/x
3. Step 3: Cross multiply
   153,956.10x = 231,128.55 × 82,935.30
4. Step 4: Simplify right side
   153,956.10x = 19,168,715,632.82
5. Step 5: Solve for x
   x = 19,168,715,632.82/153,956.10
6. Step 6: Final answer
   x = 124,507.67