Finding the Fourth Proportional to 78,585.96, 117,835.86 and 31,153

Step by Step Solution

1. Step 1: Write the proportion equation
   78,585.96 : 117,835.86 = 31,153 : x
2. Step 2: Convert to fraction form
   78,585.96/117,835.86 = 31,153/x
3. Step 3: Cross multiply
   78,585.96x = 117,835.86 × 31,153
4. Step 4: Simplify right side
   78,585.96x = 3,670,940,546.58
5. Step 5: Solve for x
   x = 3,670,940,546.58/78,585.96
6. Step 6: Final answer
   x = 46,712.42