Finding the Fourth Proportional to 112,179.34, 168,219.72 and 42,009.45

Step by Step Solution

1. Step 1: Write the proportion equation
   112,179.34 : 168,219.72 = 42,009.45 : x
2. Step 2: Convert to fraction form
   112,179.34/168,219.72 = 42,009.45/x
3. Step 3: Cross multiply
   112,179.34x = 168,219.72 × 42,009.45
4. Step 4: Simplify right side
   112,179.34x = 7,066,817,916.35
5. Step 5: Solve for x
   x = 7,066,817,916.35/112,179.34
6. Step 6: Final answer
   x = 62,995.72