Finding the Fourth Proportional to 191,513.98, 287,302.12 and 56,591.74

Step by Step Solution

1. Step 1: Write the proportion equation
   191,513.98 : 287,302.12 = 56,591.74 : x
2. Step 2: Convert to fraction form
   191,513.98/287,302.12 = 56,591.74/x
3. Step 3: Cross multiply
   191,513.98x = 287,302.12 × 56,591.74
4. Step 4: Simplify right side
   191,513.98x = 16,258,926,876.49
5. Step 5: Solve for x
   x = 16,258,926,876.49/191,513.98
6. Step 6: Final answer
   x = 84,896.81