Finding the Fourth Proportional to 72,435.89, 99,994.26 and 45,617.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,435.89 : 99,994.26 = 45,617.78 : x
2. Step 2: Convert to fraction form
   72,435.89/99,994.26 = 45,617.78/x
3. Step 3: Cross multiply
   72,435.89x = 99,994.26 × 45,617.78
4. Step 4: Simplify right side
   72,435.89x = 4,561,516,153.94
5. Step 5: Solve for x
   x = 4,561,516,153.94/72,435.89
6. Step 6: Final answer
   x = 62,973.15