Finding the Fourth Proportional to 64,980,658.50, 97,450,397.00 and 21,251,311.89

Step by Step Solution

1. Step 1: Write the proportion equation
   64,980,658.50 : 97,450,397.00 = 21,251,311.89 : x
2. Step 2: Convert to fraction form
   64,980,658.50/97,450,397.00 = 21,251,311.89/x
3. Step 3: Cross multiply
   64,980,658.50x = 97,450,397.00 × 21,251,311.89
4. Step 4: Simplify right side
   64,980,658.50x = 2,070,948,780,345,064
5. Step 5: Solve for x
   x = 2,070,948,780,345,064/64,980,658.50
6. Step 6: Final answer
   x = 31,870,233.82