Finding the Fourth Proportional to 28,569,061,994.84, 42,825,286,696.12 and 13,415,505,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,569,061,994.84 : 42,825,286,696.12 = 13,415,505,022.72 : x
2. Step 2: Convert to fraction form
   28,569,061,994.84/42,825,286,696.12 = 13,415,505,022.72/x
3. Step 3: Cross multiply
   28,569,061,994.84x = 42,825,286,696.12 × 13,415,505,022.72
4. Step 4: Simplify right side
   28,569,061,994.84x = 574,522,848,771,237,806,080
5. Step 5: Solve for x
   x = 574,522,848,771,237,806,080/28,569,061,994.84
6. Step 6: Final answer
   x = 20,109,965,419.06