Finding the Fourth Proportional to 112,440.45, 168,641.24 and 42,320.37

Step by Step Solution

1. Step 1: Write the proportion equation
   112,440.45 : 168,641.24 = 42,320.37 : x
2. Step 2: Convert to fraction form
   112,440.45/168,641.24 = 42,320.37/x
3. Step 3: Cross multiply
   112,440.45x = 168,641.24 × 42,320.37
4. Step 4: Simplify right side
   112,440.45x = 7,136,959,462.46
5. Step 5: Solve for x
   x = 7,136,959,462.46/112,440.45
6. Step 6: Final answer
   x = 63,473.24