Finding the Fourth Proportional to 647,079,485.60, 970,523,554.44 and 238,039,976.72

Step by Step Solution

1. Step 1: Write the proportion equation
   647,079,485.60 : 970,523,554.44 = 238,039,976.72 : x
2. Step 2: Convert to fraction form
   647,079,485.60/970,523,554.44 = 238,039,976.72/x
3. Step 3: Cross multiply
   647,079,485.60x = 970,523,554.44 × 238,039,976.72
4. Step 4: Simplify right side
   647,079,485.60x = 231,023,404,305,109,280
5. Step 5: Solve for x
   x = 231,023,404,305,109,280/647,079,485.60
6. Step 6: Final answer
   x = 357,024,769.67