Finding the Fourth Proportional to 278,510.32, 384,236.61 and 157,623.89

Step by Step Solution

1. Step 1: Write the proportion equation
   278,510.32 : 384,236.61 = 157,623.89 : x
2. Step 2: Convert to fraction form
   278,510.32/384,236.61 = 157,623.89/x
3. Step 3: Cross multiply
   278,510.32x = 384,236.61 × 157,623.89
4. Step 4: Simplify right side
   278,510.32x = 60,564,869,148.61
5. Step 5: Solve for x
   x = 60,564,869,148.61/278,510.32
6. Step 6: Final answer
   x = 217,460.05