Finding the Fourth Proportional to 76,311.06, 105,309.58 and 42,777.06

Step by Step Solution

1. Step 1: Write the proportion equation
   76,311.06 : 105,309.58 = 42,777.06 : x
2. Step 2: Convert to fraction form
   76,311.06/105,309.58 = 42,777.06/x
3. Step 3: Cross multiply
   76,311.06x = 105,309.58 × 42,777.06
4. Step 4: Simplify right side
   76,311.06x = 4,504,834,222.23
5. Step 5: Solve for x
   x = 4,504,834,222.23/76,311.06
6. Step 6: Final answer
   x = 59,032.52