Finding the Fourth Proportional to 72,453, 99,985.41 and 42,259.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,453 : 99,985.41 = 42,259.17 : x
2. Step 2: Convert to fraction form
   72,453/99,985.41 = 42,259.17/x
3. Step 3: Cross multiply
   72,453x = 99,985.41 × 42,259.17
4. Step 4: Simplify right side
   72,453x = 4,225,300,438.71
5. Step 5: Solve for x
   x = 4,225,300,438.71/72,453
6. Step 6: Final answer
   x = 58,317.81