Finding the Fourth Proportional to 648,076,965.02, 972,117,969.58 and 156,789,446.42

Step by Step Solution

1. Step 1: Write the proportion equation
   648,076,965.02 : 972,117,969.58 = 156,789,446.42 : x
2. Step 2: Convert to fraction form
   648,076,965.02/972,117,969.58 = 156,789,446.42/x
3. Step 3: Cross multiply
   648,076,965.02x = 972,117,969.58 × 156,789,446.42
4. Step 4: Simplify right side
   648,076,965.02x = 152,417,838,305,382,592
5. Step 5: Solve for x
   x = 152,417,838,305,382,592/648,076,965.02
6. Step 6: Final answer
   x = 235,184,779.79