Finding the Fourth Proportional to 112,380.89, 168,570.72 and 45,820.76

Step by Step Solution

1. Step 1: Write the proportion equation
   112,380.89 : 168,570.72 = 45,820.76 : x
2. Step 2: Convert to fraction form
   112,380.89/168,570.72 = 45,820.76/x
3. Step 3: Cross multiply
   112,380.89x = 168,570.72 × 45,820.76
4. Step 4: Simplify right side
   112,380.89x = 7,724,037,661.29
5. Step 5: Solve for x
   x = 7,724,037,661.29/112,380.89
6. Step 6: Final answer
   x = 68,730.88