Finding the Fourth Proportional to 78,206.86, 107,925.54 and 42,396.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,206.86 : 107,925.54 = 42,396.84 : x
2. Step 2: Convert to fraction form
   78,206.86/107,925.54 = 42,396.84/x
3. Step 3: Cross multiply
   78,206.86x = 107,925.54 × 42,396.84
4. Step 4: Simplify right side
   78,206.86x = 4,575,701,851.29
5. Step 5: Solve for x
   x = 4,575,701,851.29/78,206.86
6. Step 6: Final answer
   x = 58,507.68