Finding the Fourth Proportional to 76,627.39, 105,746.33 and 42,637.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,627.39 : 105,746.33 = 42,637.31 : x
2. Step 2: Convert to fraction form
   76,627.39/105,746.33 = 42,637.31/x
3. Step 3: Cross multiply
   76,627.39x = 105,746.33 × 42,637.31
4. Step 4: Simplify right side
   76,627.39x = 4,508,739,053.57
5. Step 5: Solve for x
   x = 4,508,739,053.57/76,627.39
6. Step 6: Final answer
   x = 58,839.78