Finding the Fourth Proportional to 72,147.90, 99,499.64 and 45,292.91

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147.90 : 99,499.64 = 45,292.91 : x
2. Step 2: Convert to fraction form
   72,147.90/99,499.64 = 45,292.91/x
3. Step 3: Cross multiply
   72,147.90x = 99,499.64 × 45,292.91
4. Step 4: Simplify right side
   72,147.90x = 4,506,627,515.59
5. Step 5: Solve for x
   x = 4,506,627,515.59/72,147.90
6. Step 6: Final answer
   x = 62,463.74