Finding the Fourth Proportional to 78,052.16, 116,993.76 and 31,280.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,052.16 : 116,993.76 = 31,280.96 : x
2. Step 2: Convert to fraction form
   78,052.16/116,993.76 = 31,280.96/x
3. Step 3: Cross multiply
   78,052.16x = 116,993.76 × 31,280.96
4. Step 4: Simplify right side
   78,052.16x = 3,659,677,126.81
5. Step 5: Solve for x
   x = 3,659,677,126.81/78,052.16
6. Step 6: Final answer
   x = 46,887.58