Finding the Fourth Proportional to 191,113.99, 286,672.72 and 57,994.25

Step by Step Solution

1. Step 1: Write the proportion equation
   191,113.99 : 286,672.72 = 57,994.25 : x
2. Step 2: Convert to fraction form
   191,113.99/286,672.72 = 57,994.25/x
3. Step 3: Cross multiply
   191,113.99x = 286,672.72 × 57,994.25
4. Step 4: Simplify right side
   191,113.99x = 16,625,369,391.86
5. Step 5: Solve for x
   x = 16,625,369,391.86/191,113.99
6. Step 6: Final answer
   x = 86,991.90