Finding the Fourth Proportional to 72,301.82, 99,780.33 and 45,434.39

Step by Step Solution

1. Step 1: Write the proportion equation
   72,301.82 : 99,780.33 = 45,434.39 : x
2. Step 2: Convert to fraction form
   72,301.82/99,780.33 = 45,434.39/x
3. Step 3: Cross multiply
   72,301.82x = 99,780.33 × 45,434.39
4. Step 4: Simplify right side
   72,301.82x = 4,533,458,427.55
5. Step 5: Solve for x
   x = 4,533,458,427.55/72,301.82
6. Step 6: Final answer
   x = 62,701.86