Finding the Fourth Proportional to 93,408, 140,113.20 and 31,078.52

Step by Step Solution

1. Step 1: Write the proportion equation
   93,408 : 140,113.20 = 31,078.52 : x
2. Step 2: Convert to fraction form
   93,408/140,113.20 = 31,078.52/x
3. Step 3: Cross multiply
   93,408x = 140,113.20 × 31,078.52
4. Step 4: Simplify right side
   93,408x = 4,354,510,888.46
5. Step 5: Solve for x
   x = 4,354,510,888.46/93,408
6. Step 6: Final answer
   x = 46,618.18