Finding the Fourth Proportional to 191,915.72, 288,123.03 and 147,573.61

Step by Step Solution

1. Step 1: Write the proportion equation
   191,915.72 : 288,123.03 = 147,573.61 : x
2. Step 2: Convert to fraction form
   191,915.72/288,123.03 = 147,573.61/x
3. Step 3: Cross multiply
   191,915.72x = 288,123.03 × 147,573.61
4. Step 4: Simplify right side
   191,915.72x = 42,519,355,355.98
5. Step 5: Solve for x
   x = 42,519,355,355.98/191,915.72
6. Step 6: Final answer
   x = 221,552.23