Finding the Fourth Proportional to 78,404.16, 117,606 and 31,656.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,404.16 : 117,606 = 31,656.48 : x
2. Step 2: Convert to fraction form
   78,404.16/117,606 = 31,656.48/x
3. Step 3: Cross multiply
   78,404.16x = 117,606 × 31,656.48
4. Step 4: Simplify right side
   78,404.16x = 3,722,991,986.88
5. Step 5: Solve for x
   x = 3,722,991,986.88/78,404.16
6. Step 6: Final answer
   x = 47,484.62