Finding the Fourth Proportional to 112,776.12, 155,674.98 and 65,070.36

Step by Step Solution

1. Step 1: Write the proportion equation
   112,776.12 : 155,674.98 = 65,070.36 : x
2. Step 2: Convert to fraction form
   112,776.12/155,674.98 = 65,070.36/x
3. Step 3: Cross multiply
   112,776.12x = 155,674.98 × 65,070.36
4. Step 4: Simplify right side
   112,776.12x = 10,129,826,991.59
5. Step 5: Solve for x
   x = 10,129,826,991.59/112,776.12
6. Step 6: Final answer
   x = 89,822.45