Finding the Fourth Proportional to 76,055.31, 104,956.56 and 42,521.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,055.31 : 104,956.56 = 42,521.31 : x
2. Step 2: Convert to fraction form
   76,055.31/104,956.56 = 42,521.31/x
3. Step 3: Cross multiply
   76,055.31x = 104,956.56 × 42,521.31
4. Step 4: Simplify right side
   76,055.31x = 4,462,890,424.29
5. Step 5: Solve for x
   x = 4,462,890,424.29/76,055.31
6. Step 6: Final answer
   x = 58,679.54