Finding the Fourth Proportional to 78,215.04, 107,936.42 and 42,404.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,215.04 : 107,936.42 = 42,404.94 : x
2. Step 2: Convert to fraction form
   78,215.04/107,936.42 = 42,404.94/x
3. Step 3: Cross multiply
   78,215.04x = 107,936.42 × 42,404.94
4. Step 4: Simplify right side
   78,215.04x = 4,577,037,201.89
5. Step 5: Solve for x
   x = 4,577,037,201.89/78,215.04
6. Step 6: Final answer
   x = 58,518.63