Finding the Fourth Proportional to 105,103.63, 145,047.72 and 59,179.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,103.63 : 145,047.72 = 59,179.07 : x
2. Step 2: Convert to fraction form
   105,103.63/145,047.72 = 59,179.07/x
3. Step 3: Cross multiply
   105,103.63x = 145,047.72 × 59,179.07
4. Step 4: Simplify right side
   105,103.63x = 8,583,789,175.22
5. Step 5: Solve for x
   x = 8,583,789,175.22/105,103.63
6. Step 6: Final answer
   x = 81,669.77