Finding the Fourth Proportional to 423,264.78, 634,956.72 and 123,767.88

Step by Step Solution

1. Step 1: Write the proportion equation
   423,264.78 : 634,956.72 = 123,767.88 : x
2. Step 2: Convert to fraction form
   423,264.78/634,956.72 = 123,767.88/x
3. Step 3: Cross multiply
   423,264.78x = 634,956.72 × 123,767.88
4. Step 4: Simplify right side
   423,264.78x = 78,587,247,126.15
5. Step 5: Solve for x
   x = 78,587,247,126.15/423,264.78
6. Step 6: Final answer
   x = 185,669.23