Finding the Fourth Proportional to 191,499.73, 287,287.41 and 56,566.09

Step by Step Solution

1. Step 1: Write the proportion equation
   191,499.73 : 287,287.41 = 56,566.09 : x
2. Step 2: Convert to fraction form
   191,499.73/287,287.41 = 56,566.09/x
3. Step 3: Cross multiply
   191,499.73x = 287,287.41 × 56,566.09
4. Step 4: Simplify right side
   191,499.73x = 16,250,725,489.93
5. Step 5: Solve for x
   x = 16,250,725,489.93/191,499.73
6. Step 6: Final answer
   x = 84,860.30