Finding the Fourth Proportional to 228,384.72, 342,584.56 and 78,623.42

Step by Step Solution

1. Step 1: Write the proportion equation
   228,384.72 : 342,584.56 = 78,623.42 : x
2. Step 2: Convert to fraction form
   228,384.72/342,584.56 = 78,623.42/x
3. Step 3: Cross multiply
   228,384.72x = 342,584.56 × 78,623.42
4. Step 4: Simplify right side
   228,384.72x = 26,935,169,746.40
5. Step 5: Solve for x
   x = 26,935,169,746.40/228,384.72
6. Step 6: Final answer
   x = 117,937.71