Finding the Fourth Proportional to 76,555.03, 105,643.63 and 42,564.27

Step by Step Solution

1. Step 1: Write the proportion equation
   76,555.03 : 105,643.63 = 42,564.27 : x
2. Step 2: Convert to fraction form
   76,555.03/105,643.63 = 42,564.27/x
3. Step 3: Cross multiply
   76,555.03x = 105,643.63 × 42,564.27
4. Step 4: Simplify right side
   76,555.03x = 4,496,643,991.10
5. Step 5: Solve for x
   x = 4,496,643,991.10/76,555.03
6. Step 6: Final answer
   x = 58,737.41