Finding the Fourth Proportional to 42,770,031.24, 64,133,821.89 and 13,620,071.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,770,031.24 : 64,133,821.89 = 13,620,071.46 : x
2. Step 2: Convert to fraction form
   42,770,031.24/64,133,821.89 = 13,620,071.46/x
3. Step 3: Cross multiply
   42,770,031.24x = 64,133,821.89 × 13,620,071.46
4. Step 4: Simplify right side
   42,770,031.24x = 873,507,237,144,712.38
5. Step 5: Solve for x
   x = 873,507,237,144,712.38/42,770,031.24
6. Step 6: Final answer
   x = 20,423,348.12