Finding the Fourth Proportional to 39,156,571,003.56, 54,036,075,756.42 and 21,335,228,503.08

Step by Step Solution

1. Step 1: Write the proportion equation
   39,156,571,003.56 : 54,036,075,756.42 = 21,335,228,503.08 : x
2. Step 2: Convert to fraction form
   39,156,571,003.56/54,036,075,756.42 = 21,335,228,503.08/x
3. Step 3: Cross multiply
   39,156,571,003.56x = 54,036,075,756.42 × 21,335,228,503.08
4. Step 4: Simplify right side
   39,156,571,003.56x = 1,152,872,023,672,962,154,496
5. Step 5: Solve for x
   x = 1,152,872,023,672,962,154,496/39,156,571,003.56
6. Step 6: Final answer
   x = 29,442,619,568.71