Finding the Fourth Proportional to 91,342.38, 137,137.83 and 51,389.48

Step by Step Solution

1. Step 1: Write the proportion equation
   91,342.38 : 137,137.83 = 51,389.48 : x
2. Step 2: Convert to fraction form
   91,342.38/137,137.83 = 51,389.48/x
3. Step 3: Cross multiply
   91,342.38x = 137,137.83 × 51,389.48
4. Step 4: Simplify right side
   91,342.38x = 7,047,441,086.34
5. Step 5: Solve for x
   x = 7,047,441,086.34/91,342.38
6. Step 6: Final answer
   x = 77,154.12