Finding the Fourth Proportional to 89,767.50, 134,678.58 and 42,418.95

Step by Step Solution

1. Step 1: Write the proportion equation
   89,767.50 : 134,678.58 = 42,418.95 : x
2. Step 2: Convert to fraction form
   89,767.50/134,678.58 = 42,418.95/x
3. Step 3: Cross multiply
   89,767.50x = 134,678.58 × 42,418.95
4. Step 4: Simplify right side
   89,767.50x = 5,712,923,951.09
5. Step 5: Solve for x
   x = 5,712,923,951.09/89,767.50
6. Step 6: Final answer
   x = 63,641.34