Finding the Fourth Proportional to 407,748,981.72, 562,675,443.30 and 238,218,933

Step by Step Solution

1. Step 1: Write the proportion equation
   407,748,981.72 : 562,675,443.30 = 238,218,933 : x
2. Step 2: Convert to fraction form
   407,748,981.72/562,675,443.30 = 238,218,933/x
3. Step 3: Cross multiply
   407,748,981.72x = 562,675,443.30 × 238,218,933
4. Step 4: Simplify right side
   407,748,981.72x = 134,039,943,728,227,984
5. Step 5: Solve for x
   x = 134,039,943,728,227,984/407,748,981.72
6. Step 6: Final answer
   x = 328,731,522.92