Finding the Fourth Proportional to 74,945.89, 112,363.23 and 45,356.69

Step by Step Solution

1. Step 1: Write the proportion equation
   74,945.89 : 112,363.23 = 45,356.69 : x
2. Step 2: Convert to fraction form
   74,945.89/112,363.23 = 45,356.69/x
3. Step 3: Cross multiply
   74,945.89x = 112,363.23 × 45,356.69
4. Step 4: Simplify right side
   74,945.89x = 5,096,424,641.50
5. Step 5: Solve for x
   x = 5,096,424,641.50/74,945.89
6. Step 6: Final answer
   x = 68,001.39