Finding the Fourth Proportional to 69,978,635.05, 104,960,865.34 and 18,865,820.65

Step by Step Solution

1. Step 1: Write the proportion equation
   69,978,635.05 : 104,960,865.34 = 18,865,820.65 : x
2. Step 2: Convert to fraction form
   69,978,635.05/104,960,865.34 = 18,865,820.65/x
3. Step 3: Cross multiply
   69,978,635.05x = 104,960,865.34 × 18,865,820.65
4. Step 4: Simplify right side
   69,978,635.05x = 1,980,172,860,773,241.25
5. Step 5: Solve for x
   x = 1,980,172,860,773,241.25/69,978,635.05
6. Step 6: Final answer
   x = 28,296,820.30