Finding the Fourth Proportional to 71,973,411.50, 99,220,003.62 and 51,310,985.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,973,411.50 : 99,220,003.62 = 51,310,985.42 : x
2. Step 2: Convert to fraction form
   71,973,411.50/99,220,003.62 = 51,310,985.42/x
3. Step 3: Cross multiply
   71,973,411.50x = 99,220,003.62 × 51,310,985.42
4. Step 4: Simplify right side
   71,973,411.50x = 5,091,076,159,173,801
5. Step 5: Solve for x
   x = 5,091,076,159,173,801/71,973,411.50
6. Step 6: Final answer
   x = 70,735,512.64