Finding the Fourth Proportional to 61,061.62, 91,605.58 and 18,940.86

Step by Step Solution

1. Step 1: Write the proportion equation
   61,061.62 : 91,605.58 = 18,940.86 : x
2. Step 2: Convert to fraction form
   61,061.62/91,605.58 = 18,940.86/x
3. Step 3: Cross multiply
   61,061.62x = 91,605.58 × 18,940.86
4. Step 4: Simplify right side
   61,061.62x = 1,735,088,466.00
5. Step 5: Solve for x
   x = 1,735,088,466.00/61,061.62
6. Step 6: Final answer
   x = 28,415.37