Finding the Fourth Proportional to 55,495.21, 83,243.37 and 19,981.86

Step by Step Solution

1. Step 1: Write the proportion equation
   55,495.21 : 83,243.37 = 19,981.86 : x
2. Step 2: Convert to fraction form
   55,495.21/83,243.37 = 19,981.86/x
3. Step 3: Cross multiply
   55,495.21x = 83,243.37 × 19,981.86
4. Step 4: Simplify right side
   55,495.21x = 1,663,357,510.82
5. Step 5: Solve for x
   x = 1,663,357,510.82/55,495.21
6. Step 6: Final answer
   x = 29,972.99