Finding the Fourth Proportional to 78,583.96, 117,832.86 and 31,151

Step by Step Solution

1. Step 1: Write the proportion equation
   78,583.96 : 117,832.86 = 31,151 : x
2. Step 2: Convert to fraction form
   78,583.96/117,832.86 = 31,151/x
3. Step 3: Cross multiply
   78,583.96x = 117,832.86 × 31,151
4. Step 4: Simplify right side
   78,583.96x = 3,670,611,421.86
5. Step 5: Solve for x
   x = 3,670,611,421.86/78,583.96
6. Step 6: Final answer
   x = 46,709.42