Finding the Fourth Proportional to 42,807,598.56, 64,232,393.04 and 20,090,342.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807,598.56 : 64,232,393.04 = 20,090,342.88 : x
2. Step 2: Convert to fraction form
   42,807,598.56/64,232,393.04 = 20,090,342.88/x
3. Step 3: Cross multiply
   42,807,598.56x = 64,232,393.04 × 20,090,342.88
4. Step 4: Simplify right side
   42,807,598.56x = 1,290,450,800,176,525.50
5. Step 5: Solve for x
   x = 1,290,450,800,176,525.50/42,807,598.56
6. Step 6: Final answer
   x = 30,145,367.73