Finding the Fourth Proportional to 78,776.24, 117,886.80 and 49,208

Step by Step Solution

1. Step 1: Write the proportion equation
   78,776.24 : 117,886.80 = 49,208 : x
2. Step 2: Convert to fraction form
   78,776.24/117,886.80 = 49,208/x
3. Step 3: Cross multiply
   78,776.24x = 117,886.80 × 49,208
4. Step 4: Simplify right side
   78,776.24x = 5,800,973,654.40
5. Step 5: Solve for x
   x = 5,800,973,654.40/78,776.24
6. Step 6: Final answer
   x = 73,638.62