Finding the Fourth Proportional to 74,970.05, 112,399.52 and 45,380.88

Step by Step Solution

1. Step 1: Write the proportion equation
   74,970.05 : 112,399.52 = 45,380.88 : x
2. Step 2: Convert to fraction form
   74,970.05/112,399.52 = 45,380.88/x
3. Step 3: Cross multiply
   74,970.05x = 112,399.52 × 45,380.88
4. Step 4: Simplify right side
   74,970.05x = 5,100,788,902.27
5. Step 5: Solve for x
   x = 5,100,788,902.27/74,970.05
6. Step 6: Final answer
   x = 68,037.69