Finding the Fourth Proportional to 56,842.45, 78,448.12 and 42,477.33

Step by Step Solution

1. Step 1: Write the proportion equation
   56,842.45 : 78,448.12 = 42,477.33 : x
2. Step 2: Convert to fraction form
   56,842.45/78,448.12 = 42,477.33/x
3. Step 3: Cross multiply
   56,842.45x = 78,448.12 × 42,477.33
4. Step 4: Simplify right side
   56,842.45x = 3,332,266,983.43
5. Step 5: Solve for x
   x = 3,332,266,983.43/56,842.45
6. Step 6: Final answer
   x = 58,622.86