Finding the Fourth Proportional to 112,099.89, 154,699.05 and 61,800.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,099.89 : 154,699.05 = 61,800.69 : x
2. Step 2: Convert to fraction form
   112,099.89/154,699.05 = 61,800.69/x
3. Step 3: Cross multiply
   112,099.89x = 154,699.05 × 61,800.69
4. Step 4: Simplify right side
   112,099.89x = 9,560,508,032.34
5. Step 5: Solve for x
   x = 9,560,508,032.34/112,099.89
6. Step 6: Final answer
   x = 85,285.61