Finding the Fourth Proportional to 42,834,681.36, 64,197,434.52 and 20,065,386.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,834,681.36 : 64,197,434.52 = 20,065,386.96 : x
2. Step 2: Convert to fraction form
   42,834,681.36/64,197,434.52 = 20,065,386.96/x
3. Step 3: Cross multiply
   42,834,681.36x = 64,197,434.52 × 20,065,386.96
4. Step 4: Simplify right side
   42,834,681.36x = 1,288,146,365,483,062
5. Step 5: Solve for x
   x = 1,288,146,365,483,062/42,834,681.36
6. Step 6: Final answer
   x = 30,072,509.58