Finding the Fourth Proportional to 290,393, 435,605.92 and 103,404.52

Step by Step Solution

1. Step 1: Write the proportion equation
   290,393 : 435,605.92 = 103,404.52 : x
2. Step 2: Convert to fraction form
   290,393/435,605.92 = 103,404.52/x
3. Step 3: Cross multiply
   290,393x = 435,605.92 × 103,404.52
4. Step 4: Simplify right side
   290,393x = 45,043,621,066.76
5. Step 5: Solve for x
   x = 45,043,621,066.76/290,393
6. Step 6: Final answer
   x = 155,112.63