Finding the Fourth Proportional to 72,416.37, 99,938.01 and 45,208.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,416.37 : 99,938.01 = 45,208.59 : x
2. Step 2: Convert to fraction form
   72,416.37/99,938.01 = 45,208.59/x
3. Step 3: Cross multiply
   72,416.37x = 99,938.01 × 45,208.59
4. Step 4: Simplify right side
   72,416.37x = 4,518,056,519.51
5. Step 5: Solve for x
   x = 4,518,056,519.51/72,416.37
6. Step 6: Final answer
   x = 62,389.99