Finding the Fourth Proportional to 89,354.68, 133,827.86 and 42,640.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,354.68 : 133,827.86 = 42,640.36 : x
2. Step 2: Convert to fraction form
   89,354.68/133,827.86 = 42,640.36/x
3. Step 3: Cross multiply
   89,354.68x = 133,827.86 × 42,640.36
4. Step 4: Simplify right side
   89,354.68x = 5,706,468,128.43
5. Step 5: Solve for x
   x = 5,706,468,128.43/89,354.68
6. Step 6: Final answer
   x = 63,863.11