Finding the Fourth Proportional to 72,445.75, 99,975.50 and 42,252.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,445.75 : 99,975.50 = 42,252.01 : x
2. Step 2: Convert to fraction form
   72,445.75/99,975.50 = 42,252.01/x
3. Step 3: Cross multiply
   72,445.75x = 99,975.50 × 42,252.01
4. Step 4: Simplify right side
   72,445.75x = 4,224,165,825.76
5. Step 5: Solve for x
   x = 4,224,165,825.76/72,445.75
6. Step 6: Final answer
   x = 58,307.99