Finding the Fourth Proportional to 112,532.80, 155,314.36 and 64,813.76

Step by Step Solution

1. Step 1: Write the proportion equation
   112,532.80 : 155,314.36 = 64,813.76 : x
2. Step 2: Convert to fraction form
   112,532.80/155,314.36 = 64,813.76/x
3. Step 3: Cross multiply
   112,532.80x = 155,314.36 × 64,813.76
4. Step 4: Simplify right side
   112,532.80x = 10,066,507,653.59
5. Step 5: Solve for x
   x = 10,066,507,653.59/112,532.80
6. Step 6: Final answer
   x = 89,453.99