Finding the Fourth Proportional to 78,544.51, 108,390.91 and 42,734.66

Step by Step Solution

1. Step 1: Write the proportion equation
   78,544.51 : 108,390.91 = 42,734.66 : x
2. Step 2: Convert to fraction form
   78,544.51/108,390.91 = 42,734.66/x
3. Step 3: Cross multiply
   78,544.51x = 108,390.91 × 42,734.66
4. Step 4: Simplify right side
   78,544.51x = 4,632,049,031.83
5. Step 5: Solve for x
   x = 4,632,049,031.83/78,544.51
6. Step 6: Final answer
   x = 58,973.56