Finding the Fourth Proportional to 72,419.64, 99,963.56 and 45,607

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419.64 : 99,963.56 = 45,607 : x
2. Step 2: Convert to fraction form
   72,419.64/99,963.56 = 45,607/x
3. Step 3: Cross multiply
   72,419.64x = 99,963.56 × 45,607
4. Step 4: Simplify right side
   72,419.64x = 4,559,038,080.92
5. Step 5: Solve for x
   x = 4,559,038,080.92/72,419.64
6. Step 6: Final answer
   x = 62,953.06