Finding the Fourth Proportional to 83,388.78, 115,096.77 and 51,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,388.78 : 115,096.77 = 51,538.50 : x
2. Step 2: Convert to fraction form
   83,388.78/115,096.77 = 51,538.50/x
3. Step 3: Cross multiply
   83,388.78x = 115,096.77 × 51,538.50
4. Step 4: Simplify right side
   83,388.78x = 5,931,914,880.65
5. Step 5: Solve for x
   x = 5,931,914,880.65/83,388.78
6. Step 6: Final answer
   x = 71,135.65