Finding the Fourth Proportional to 78,451.29, 108,263.51 and 42,641.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,451.29 : 108,263.51 = 42,641.39 : x
2. Step 2: Convert to fraction form
   78,451.29/108,263.51 = 42,641.39/x
3. Step 3: Cross multiply
   78,451.29x = 108,263.51 × 42,641.39
4. Step 4: Simplify right side
   78,451.29x = 4,616,505,798.15
5. Step 5: Solve for x
   x = 4,616,505,798.15/78,451.29
6. Step 6: Final answer
   x = 58,845.51