Finding the Fourth Proportional to 78,071.98, 107,739.69 and 42,262.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,071.98 : 107,739.69 = 42,262.01 : x
2. Step 2: Convert to fraction form
   78,071.98/107,739.69 = 42,262.01/x
3. Step 3: Cross multiply
   78,071.98x = 107,739.69 × 42,262.01
4. Step 4: Simplify right side
   78,071.98x = 4,553,295,856.18
5. Step 5: Solve for x
   x = 4,553,295,856.18/78,071.98
6. Step 6: Final answer
   x = 58,321.77