Finding the Fourth Proportional to 112,581.81, 168,773.36 and 42,412.05

Step by Step Solution

1. Step 1: Write the proportion equation
   112,581.81 : 168,773.36 = 42,412.05 : x
2. Step 2: Convert to fraction form
   112,581.81/168,773.36 = 42,412.05/x
3. Step 3: Cross multiply
   112,581.81x = 168,773.36 × 42,412.05
4. Step 4: Simplify right side
   112,581.81x = 7,158,023,970.93
5. Step 5: Solve for x
   x = 7,158,023,970.93/112,581.81
6. Step 6: Final answer
   x = 63,580.64