Finding the Fourth Proportional to 648,076,972.41, 972,117,980.64 and 156,789,453.78

Step by Step Solution

1. Step 1: Write the proportion equation
   648,076,972.41 : 972,117,980.64 = 156,789,453.78 : x
2. Step 2: Convert to fraction form
   648,076,972.41/972,117,980.64 = 156,789,453.78/x
3. Step 3: Cross multiply
   648,076,972.41x = 972,117,980.64 × 156,789,453.78
4. Step 4: Simplify right side
   648,076,972.41x = 152,417,847,194,262,208
5. Step 5: Solve for x
   x = 152,417,847,194,262,208/648,076,972.41
6. Step 6: Final answer
   x = 235,184,790.82