Finding the Fourth Proportional to 78,611.42, 108,486.42 and 42,802.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,611.42 : 108,486.42 = 42,802.82 : x
2. Step 2: Convert to fraction form
   78,611.42/108,486.42 = 42,802.82/x
3. Step 3: Cross multiply
   78,611.42x = 108,486.42 × 42,802.82
4. Step 4: Simplify right side
   78,611.42x = 4,643,524,707.70
5. Step 5: Solve for x
   x = 4,643,524,707.70/78,611.42
6. Step 6: Final answer
   x = 59,069.34