Finding the Fourth Proportional to 78,137.80, 107,830.68 and 42,327.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,137.80 : 107,830.68 = 42,327.82 : x
2. Step 2: Convert to fraction form
   78,137.80/107,830.68 = 42,327.82/x
3. Step 3: Cross multiply
   78,137.80x = 107,830.68 × 42,327.82
4. Step 4: Simplify right side
   78,137.80x = 4,564,237,613.52
5. Step 5: Solve for x
   x = 4,564,237,613.52/78,137.80
6. Step 6: Final answer
   x = 58,412.67