Finding the Fourth Proportional to 78,656.78, 108,546.64 and 42,846.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,656.78 : 108,546.64 = 42,846.44 : x
2. Step 2: Convert to fraction form
   78,656.78/108,546.64 = 42,846.44/x
3. Step 3: Cross multiply
   78,656.78x = 108,546.64 × 42,846.44
4. Step 4: Simplify right side
   78,656.78x = 4,650,837,097.96
5. Step 5: Solve for x
   x = 4,650,837,097.96/78,656.78
6. Step 6: Final answer
   x = 59,128.24