Finding the Fourth Proportional to 78,080.21, 107,751.54 and 42,270.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,080.21 : 107,751.54 = 42,270.98 : x
2. Step 2: Convert to fraction form
   78,080.21/107,751.54 = 42,270.98/x
3. Step 3: Cross multiply
   78,080.21x = 107,751.54 × 42,270.98
4. Step 4: Simplify right side
   78,080.21x = 4,554,762,653.55
5. Step 5: Solve for x
   x = 4,554,762,653.55/78,080.21
6. Step 6: Final answer
   x = 58,334.41