Finding the Fourth Proportional to 78,590.10, 108,449.94 and 42,777.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,590.10 : 108,449.94 = 42,777.99 : x
2. Step 2: Convert to fraction form
   78,590.10/108,449.94 = 42,777.99/x
3. Step 3: Cross multiply
   78,590.10x = 108,449.94 × 42,777.99
4. Step 4: Simplify right side
   78,590.10x = 4,639,270,448.82
5. Step 5: Solve for x
   x = 4,639,270,448.82/78,590.10
6. Step 6: Final answer
   x = 59,031.23