Finding the Fourth Proportional to 137,078.84, 189,167.46 and 76,649.60

Step by Step Solution

1. Step 1: Write the proportion equation
   137,078.84 : 189,167.46 = 76,649.60 : x
2. Step 2: Convert to fraction form
   137,078.84/189,167.46 = 76,649.60/x
3. Step 3: Cross multiply
   137,078.84x = 189,167.46 × 76,649.60
4. Step 4: Simplify right side
   137,078.84x = 14,499,610,142.02
5. Step 5: Solve for x
   x = 14,499,610,142.02/137,078.84
6. Step 6: Final answer
   x = 105,775.70