Finding the Fourth Proportional to 112,281.84, 168,399.72 and 42,159.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,281.84 : 168,399.72 = 42,159.60 : x
2. Step 2: Convert to fraction form
   112,281.84/168,399.72 = 42,159.60/x
3. Step 3: Cross multiply
   112,281.84x = 168,399.72 × 42,159.60
4. Step 4: Simplify right side
   112,281.84x = 7,099,664,835.31
5. Step 5: Solve for x
   x = 7,099,664,835.31/112,281.84
6. Step 6: Final answer
   x = 63,230.75