Finding the Fourth Proportional to 93,339.47, 140,055.91 and 42,738.39

Step by Step Solution

1. Step 1: Write the proportion equation
   93,339.47 : 140,055.91 = 42,738.39 : x
2. Step 2: Convert to fraction form
   93,339.47/140,055.91 = 42,738.39/x
3. Step 3: Cross multiply
   93,339.47x = 140,055.91 × 42,738.39
4. Step 4: Simplify right side
   93,339.47x = 5,985,763,996.54
5. Step 5: Solve for x
   x = 5,985,763,996.54/93,339.47
6. Step 6: Final answer
   x = 64,128.97