Finding the Fourth Proportional to 78,072.86, 107,740.43 and 42,262.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,072.86 : 107,740.43 = 42,262.86 : x
2. Step 2: Convert to fraction form
   78,072.86/107,740.43 = 42,262.86/x
3. Step 3: Cross multiply
   78,072.86x = 107,740.43 × 42,262.86
4. Step 4: Simplify right side
   78,072.86x = 4,553,419,060.63
5. Step 5: Solve for x
   x = 4,553,419,060.63/78,072.86
6. Step 6: Final answer
   x = 58,322.69