Finding the Fourth Proportional to 112,820.04, 155,698.20 and 65,075.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,820.04 : 155,698.20 = 65,075.40 : x
2. Step 2: Convert to fraction form
   112,820.04/155,698.20 = 65,075.40/x
3. Step 3: Cross multiply
   112,820.04x = 155,698.20 × 65,075.40
4. Step 4: Simplify right side
   112,820.04x = 10,132,122,644.28
5. Step 5: Solve for x
   x = 10,132,122,644.28/112,820.04
6. Step 6: Final answer
   x = 89,807.83