Finding the Fourth Proportional to 72,255, 99,773.46 and 45,442.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,255 : 99,773.46 = 45,442.38 : x
2. Step 2: Convert to fraction form
   72,255/99,773.46 = 45,442.38/x
3. Step 3: Cross multiply
   72,255x = 99,773.46 × 45,442.38
4. Step 4: Simplify right side
   72,255x = 4,533,943,483.23
5. Step 5: Solve for x
   x = 4,533,943,483.23/72,255
6. Step 6: Final answer
   x = 62,749.20