Finding the Fourth Proportional to 72,535.48, 108,802.70 and 51,099.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,535.48 : 108,802.70 = 51,099.98 : x
2. Step 2: Convert to fraction form
   72,535.48/108,802.70 = 51,099.98/x
3. Step 3: Cross multiply
   72,535.48x = 108,802.70 × 51,099.98
4. Step 4: Simplify right side
   72,535.48x = 5,559,815,793.95
5. Step 5: Solve for x
   x = 5,559,815,793.95/72,535.48
6. Step 6: Final answer
   x = 76,649.60