Finding the Fourth Proportional to 104,072.50, 143,620.05 and 59,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   104,072.50 : 143,620.05 = 59,360.50 : x
2. Step 2: Convert to fraction form
   104,072.50/143,620.05 = 59,360.50/x
3. Step 3: Cross multiply
   104,072.50x = 143,620.05 × 59,360.50
4. Step 4: Simplify right side
   104,072.50x = 8,525,357,978.03
5. Step 5: Solve for x
   x = 8,525,357,978.03/104,072.50
6. Step 6: Final answer
   x = 81,917.49