Finding the Fourth Proportional to 72,147.15, 99,498.60 and 45,292.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147.15 : 99,498.60 = 45,292.16 : x
2. Step 2: Convert to fraction form
   72,147.15/99,498.60 = 45,292.16/x
3. Step 3: Cross multiply
   72,147.15x = 99,498.60 × 45,292.16
4. Step 4: Simplify right side
   72,147.15x = 4,506,506,013.48
5. Step 5: Solve for x
   x = 4,506,506,013.48/72,147.15
6. Step 6: Final answer
   x = 62,462.70