Finding the Fourth Proportional to 105,056.78, 144,985.21 and 59,738.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,056.78 : 144,985.21 = 59,738.98 : x
2. Step 2: Convert to fraction form
   105,056.78/144,985.21 = 59,738.98/x
3. Step 3: Cross multiply
   105,056.78x = 144,985.21 × 59,738.98
4. Step 4: Simplify right side
   105,056.78x = 8,661,268,261.79
5. Step 5: Solve for x
   x = 8,661,268,261.79/105,056.78
6. Step 6: Final answer
   x = 82,443.69