Finding the Fourth Proportional to 71,724,663.42, 107,587,597.88 and 19,913,306.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,724,663.42 : 107,587,597.88 = 19,913,306.15 : x
2. Step 2: Convert to fraction form
   71,724,663.42/107,587,597.88 = 19,913,306.15/x
3. Step 3: Cross multiply
   71,724,663.42x = 107,587,597.88 × 19,913,306.15
4. Step 4: Simplify right side
   71,724,663.42x = 2,142,424,774,158,995.50
5. Step 5: Solve for x
   x = 2,142,424,774,158,995.50/71,724,663.42
6. Step 6: Final answer
   x = 29,870,126.56