Finding the Fourth Proportional to 42,683,401.49, 64,031,209.71 and 13,142,091.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,683,401.49 : 64,031,209.71 = 13,142,091.16 : x
2. Step 2: Convert to fraction form
   42,683,401.49/64,031,209.71 = 13,142,091.16/x
3. Step 3: Cross multiply
   42,683,401.49x = 64,031,209.71 × 13,142,091.16
4. Step 4: Simplify right side
   42,683,401.49x = 841,503,995,378,657.88
5. Step 5: Solve for x
   x = 841,503,995,378,657.88/42,683,401.49
6. Step 6: Final answer
   x = 19,715,017.22