Finding the Fourth Proportional to 78,705.56, 118,014.59 and 31,903.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.56 : 118,014.59 = 31,903.76 : x
2. Step 2: Convert to fraction form
   78,705.56/118,014.59 = 31,903.76/x
3. Step 3: Cross multiply
   78,705.56x = 118,014.59 × 31,903.76
4. Step 4: Simplify right side
   78,705.56x = 3,765,108,406.27
5. Step 5: Solve for x
   x = 3,765,108,406.27/78,705.56
6. Step 6: Final answer
   x = 47,837.90