Finding the Fourth Proportional to 191,510.72, 287,285.70 and 73,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,510.72 : 287,285.70 = 73,281.50 : x
2. Step 2: Convert to fraction form
   191,510.72/287,285.70 = 73,281.50/x
3. Step 3: Cross multiply
   191,510.72x = 287,285.70 × 73,281.50
4. Step 4: Simplify right side
   191,510.72x = 21,052,727,024.55
5. Step 5: Solve for x
   x = 21,052,727,024.55/191,510.72
6. Step 6: Final answer
   x = 109,929.76