Finding the Fourth Proportional to 70,499.52, 105,743.67 and 28,349.88

Step by Step Solution

1. Step 1: Write the proportion equation
   70,499.52 : 105,743.67 = 28,349.88 : x
2. Step 2: Convert to fraction form
   70,499.52/105,743.67 = 28,349.88/x
3. Step 3: Cross multiply
   70,499.52x = 105,743.67 × 28,349.88
4. Step 4: Simplify right side
   70,499.52x = 2,997,820,355.26
5. Step 5: Solve for x
   x = 2,997,820,355.26/70,499.52
6. Step 6: Final answer
   x = 42,522.56