Finding the Fourth Proportional to 112,275.84, 168,390.72 and 42,153.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,275.84 : 168,390.72 = 42,153.60 : x
2. Step 2: Convert to fraction form
   112,275.84/168,390.72 = 42,153.60/x
3. Step 3: Cross multiply
   112,275.84x = 168,390.72 × 42,153.60
4. Step 4: Simplify right side
   112,275.84x = 7,098,275,054.59
5. Step 5: Solve for x
   x = 7,098,275,054.59/112,275.84
6. Step 6: Final answer
   x = 63,221.75