Finding the Fourth Proportional to 76,544.72, 105,633.47 and 42,551.90

Step by Step Solution

1. Step 1: Write the proportion equation
   76,544.72 : 105,633.47 = 42,551.90 : x
2. Step 2: Convert to fraction form
   76,544.72/105,633.47 = 42,551.90/x
3. Step 3: Cross multiply
   76,544.72x = 105,633.47 × 42,551.90
4. Step 4: Simplify right side
   76,544.72x = 4,494,904,111.17
5. Step 5: Solve for x
   x = 4,494,904,111.17/76,544.72
6. Step 6: Final answer
   x = 58,722.59