Finding the Fourth Proportional to 648,076,968.27, 972,117,974.46 and 156,789,449.67

Step by Step Solution

1. Step 1: Write the proportion equation
   648,076,968.27 : 972,117,974.46 = 156,789,449.67 : x
2. Step 2: Convert to fraction form
   648,076,968.27/972,117,974.46 = 156,789,449.67/x
3. Step 3: Cross multiply
   648,076,968.27x = 972,117,974.46 × 156,789,449.67
4. Step 4: Simplify right side
   648,076,968.27x = 152,417,842,229,898,496
5. Step 5: Solve for x
   x = 152,417,842,229,898,496/648,076,968.27
6. Step 6: Final answer
   x = 235,184,784.67