Finding the Fourth Proportional to 76,807.51, 115,120.71 and 34,638.17

Step by Step Solution

1. Step 1: Write the proportion equation
   76,807.51 : 115,120.71 = 34,638.17 : x
2. Step 2: Convert to fraction form
   76,807.51/115,120.71 = 34,638.17/x
3. Step 3: Cross multiply
   76,807.51x = 115,120.71 × 34,638.17
4. Step 4: Simplify right side
   76,807.51x = 3,987,570,147.90
5. Step 5: Solve for x
   x = 3,987,570,147.90/76,807.51
6. Step 6: Final answer
   x = 51,916.41