Finding the Fourth Proportional to 78,334.82, 117,618.87 and 31,678.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,334.82 : 117,618.87 = 31,678.82 : x
2. Step 2: Convert to fraction form
   78,334.82/117,618.87 = 31,678.82/x
3. Step 3: Cross multiply
   78,334.82x = 117,618.87 × 31,678.82
4. Step 4: Simplify right side
   78,334.82x = 3,726,027,011.33
5. Step 5: Solve for x
   x = 3,726,027,011.33/78,334.82
6. Step 6: Final answer
   x = 47,565.40