Finding the Fourth Proportional to 105,048.50, 144,961.04 and 59,720.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,048.50 : 144,961.04 = 59,720.09 : x
2. Step 2: Convert to fraction form
   105,048.50/144,961.04 = 59,720.09/x
3. Step 3: Cross multiply
   105,048.50x = 144,961.04 × 59,720.09
4. Step 4: Simplify right side
   105,048.50x = 8,657,085,779.79
5. Step 5: Solve for x
   x = 8,657,085,779.79/105,048.50
6. Step 6: Final answer
   x = 82,410.37