Finding the Fourth Proportional to 155,612.10, 233,418.15 and 76,880.10

Step by Step Solution

1. Step 1: Write the proportion equation
   155,612.10 : 233,418.15 = 76,880.10 : x
2. Step 2: Convert to fraction form
   155,612.10/233,418.15 = 76,880.10/x
3. Step 3: Cross multiply
   155,612.10x = 233,418.15 × 76,880.10
4. Step 4: Simplify right side
   155,612.10x = 17,945,210,713.82
5. Step 5: Solve for x
   x = 17,945,210,713.82/155,612.10
6. Step 6: Final answer
   x = 115,320.15