Finding the Fourth Proportional to 30,487,307,417.05, 42,073,619,679.57 and 18,281,999,678.23

Step by Step Solution

1. Step 1: Write the proportion equation
   30,487,307,417.05 : 42,073,619,679.57 = 18,281,999,678.23 : x
2. Step 2: Convert to fraction form
   30,487,307,417.05/42,073,619,679.57 = 18,281,999,678.23/x
3. Step 3: Cross multiply
   30,487,307,417.05x = 42,073,619,679.57 × 18,281,999,678.23
4. Step 4: Simplify right side
   30,487,307,417.05x = 769,189,901,443,870,097,408
5. Step 5: Solve for x
   x = 769,189,901,443,870,097,408/30,487,307,417.05
6. Step 6: Final answer
   x = 25,229,840,435.62