Finding the Fourth Proportional to 42,120,545, 63,180,817.50 and 10,207,841

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120,545 : 63,180,817.50 = 10,207,841 : x
2. Step 2: Convert to fraction form
   42,120,545/63,180,817.50 = 10,207,841/x
3. Step 3: Cross multiply
   42,120,545x = 63,180,817.50 × 10,207,841
4. Step 4: Simplify right side
   42,120,545x = 644,939,739,290,017.50
5. Step 5: Solve for x
   x = 644,939,739,290,017.50/42,120,545
6. Step 6: Final answer
   x = 15,311,761.50