Finding the Fourth Proportional to 102,222.81, 141,067.49 and 56,899.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,222.81 : 141,067.49 = 56,899.83 : x
2. Step 2: Convert to fraction form
   102,222.81/141,067.49 = 56,899.83/x
3. Step 3: Cross multiply
   102,222.81x = 141,067.49 × 56,899.83
4. Step 4: Simplify right side
   102,222.81x = 8,026,715,915.03
5. Step 5: Solve for x
   x = 8,026,715,915.03/102,222.81
6. Step 6: Final answer
   x = 78,521.77