Finding the Fourth Proportional to 209,468.32, 289,060.61 and 113,972.96

Step by Step Solution

1. Step 1: Write the proportion equation
   209,468.32 : 289,060.61 = 113,972.96 : x
2. Step 2: Convert to fraction form
   209,468.32/289,060.61 = 113,972.96/x
3. Step 3: Cross multiply
   209,468.32x = 289,060.61 × 113,972.96
4. Step 4: Simplify right side
   209,468.32x = 32,945,093,493.89
5. Step 5: Solve for x
   x = 32,945,093,493.89/209,468.32
6. Step 6: Final answer
   x = 157,279.60