Finding the Fourth Proportional to 61,109.93, 91,647.37 and 18,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,109.93 : 91,647.37 = 18,419.50 : x
2. Step 2: Convert to fraction form
   61,109.93/91,647.37 = 18,419.50/x
3. Step 3: Cross multiply
   61,109.93x = 91,647.37 × 18,419.50
4. Step 4: Simplify right side
   61,109.93x = 1,688,098,869.30
5. Step 5: Solve for x
   x = 1,688,098,869.30/61,109.93
6. Step 6: Final answer
   x = 27,623.97