Finding the Fourth Proportional to 262,061.70, 392,185.35 and 156,956.10

Step by Step Solution

1. Step 1: Write the proportion equation
   262,061.70 : 392,185.35 = 156,956.10 : x
2. Step 2: Convert to fraction form
   262,061.70/392,185.35 = 156,956.10/x
3. Step 3: Cross multiply
   262,061.70x = 392,185.35 × 156,956.10
4. Step 4: Simplify right side
   262,061.70x = 61,555,883,013.14
5. Step 5: Solve for x
   x = 61,555,883,013.14/262,061.70
6. Step 6: Final answer
   x = 234,890.80