Finding the Fourth Proportional to 202,521.72, 279,480.78 and 113,097.72

Step by Step Solution

1. Step 1: Write the proportion equation
   202,521.72 : 279,480.78 = 113,097.72 : x
2. Step 2: Convert to fraction form
   202,521.72/279,480.78 = 113,097.72/x
3. Step 3: Cross multiply
   202,521.72x = 279,480.78 × 113,097.72
4. Step 4: Simplify right side
   202,521.72x = 31,608,639,001.82
5. Step 5: Solve for x
   x = 31,608,639,001.82/202,521.72
6. Step 6: Final answer
   x = 156,075.30