Finding the Fourth Proportional to 78,796.91, 108,739.58 and 42,986.93

Step by Step Solution

1. Step 1: Write the proportion equation
   78,796.91 : 108,739.58 = 42,986.93 : x
2. Step 2: Convert to fraction form
   78,796.91/108,739.58 = 42,986.93/x
3. Step 3: Cross multiply
   78,796.91x = 108,739.58 × 42,986.93
4. Step 4: Simplify right side
   78,796.91x = 4,674,379,955.06
5. Step 5: Solve for x
   x = 4,674,379,955.06/78,796.91
6. Step 6: Final answer
   x = 59,321.87