Finding the Fourth Proportional to 139,688.46, 192,770.15 and 76,026.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,688.46 : 192,770.15 = 76,026.69 : x
2. Step 2: Convert to fraction form
   139,688.46/192,770.15 = 76,026.69/x
3. Step 3: Cross multiply
   139,688.46x = 192,770.15 × 76,026.69
4. Step 4: Simplify right side
   139,688.46x = 14,655,676,055.17
5. Step 5: Solve for x
   x = 14,655,676,055.17/139,688.46
6. Step 6: Final answer
   x = 104,916.87