Finding the Fourth Proportional to 72,148.15, 99,499.98 and 45,293.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,148.15 : 99,499.98 = 45,293.16 : x
2. Step 2: Convert to fraction form
   72,148.15/99,499.98 = 45,293.16/x
3. Step 3: Cross multiply
   72,148.15x = 99,499.98 × 45,293.16
4. Step 4: Simplify right side
   72,148.15x = 4,506,668,514.14
5. Step 5: Solve for x
   x = 4,506,668,514.14/72,148.15
6. Step 6: Final answer
   x = 62,464.09