Finding the Fourth Proportional to 290,638,081.98, 400,754,736.54 and 237,550,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   290,638,081.98 : 400,754,736.54 = 237,550,078.56 : x
2. Step 2: Convert to fraction form
   290,638,081.98/400,754,736.54 = 237,550,078.56/x
3. Step 3: Cross multiply
   290,638,081.98x = 400,754,736.54 × 237,550,078.56
4. Step 4: Simplify right side
   290,638,081.98x = 95,199,319,148,369,104
5. Step 5: Solve for x
   x = 95,199,319,148,369,104/290,638,081.98
6. Step 6: Final answer
   x = 327,552,805.54