Finding the Fourth Proportional to 139,189,839.98, 208,811,647.24 and 52,921,538.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,189,839.98 : 208,811,647.24 = 52,921,538.96 : x
2. Step 2: Convert to fraction form
   139,189,839.98/208,811,647.24 = 52,921,538.96/x
3. Step 3: Cross multiply
   139,189,839.98x = 208,811,647.24 × 52,921,538.96
4. Step 4: Simplify right side
   139,189,839.98x = 11,050,633,724,713,438
5. Step 5: Solve for x
   x = 11,050,633,724,713,438/139,189,839.98
6. Step 6: Final answer
   x = 79,392,531.28