Finding the Fourth Proportional to 78,459.72, 117,677.16 and 34,074.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,459.72 : 117,677.16 = 34,074.57 : x
2. Step 2: Convert to fraction form
   78,459.72/117,677.16 = 34,074.57/x
3. Step 3: Cross multiply
   78,459.72x = 117,677.16 × 34,074.57
4. Step 4: Simplify right side
   78,459.72x = 4,009,798,625.82
5. Step 5: Solve for x
   x = 4,009,798,625.82/78,459.72
6. Step 6: Final answer
   x = 51,106.46