Finding the Fourth Proportional to 191,560.16, 287,385.17 and 58,440.37

Step by Step Solution

1. Step 1: Write the proportion equation
   191,560.16 : 287,385.17 = 58,440.37 : x
2. Step 2: Convert to fraction form
   191,560.16/287,385.17 = 58,440.37/x
3. Step 3: Cross multiply
   191,560.16x = 287,385.17 × 58,440.37
4. Step 4: Simplify right side
   191,560.16x = 16,794,895,667.31
5. Step 5: Solve for x
   x = 16,794,895,667.31/191,560.16
6. Step 6: Final answer
   x = 87,674.26