Finding the Fourth Proportional to 55,918.86, 83,892.12 and 45,940.47

Step by Step Solution

1. Step 1: Write the proportion equation
   55,918.86 : 83,892.12 = 45,940.47 : x
2. Step 2: Convert to fraction form
   55,918.86/83,892.12 = 45,940.47/x
3. Step 3: Cross multiply
   55,918.86x = 83,892.12 × 45,940.47
4. Step 4: Simplify right side
   55,918.86x = 3,854,043,422.10
5. Step 5: Solve for x
   x = 3,854,043,422.10/55,918.86
6. Step 6: Final answer
   x = 68,922.07