Finding the Fourth Proportional to 191,880.57, 287,821.58 and 58,760.31

Step by Step Solution

1. Step 1: Write the proportion equation
   191,880.57 : 287,821.58 = 58,760.31 : x
2. Step 2: Convert to fraction form
   191,880.57/287,821.58 = 58,760.31/x
3. Step 3: Cross multiply
   191,880.57x = 287,821.58 × 58,760.31
4. Step 4: Simplify right side
   191,880.57x = 16,912,484,971.69
5. Step 5: Solve for x
   x = 16,912,484,971.69/191,880.57
6. Step 6: Final answer
   x = 88,140.69