Finding the Fourth Proportional to 78,205.05, 107,923.53 and 42,395.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,205.05 : 107,923.53 = 42,395.63 : x
2. Step 2: Convert to fraction form
   78,205.05/107,923.53 = 42,395.63/x
3. Step 3: Cross multiply
   78,205.05x = 107,923.53 × 42,395.63
4. Step 4: Simplify right side
   78,205.05x = 4,575,485,506.56
5. Step 5: Solve for x
   x = 4,575,485,506.56/78,205.05
6. Step 6: Final answer
   x = 58,506.27