Finding the Fourth Proportional to 42,126,890.40, 59,057,272.80 and 42,126,890.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,126,890.40 : 59,057,272.80 = 42,126,890.40 : x
2. Step 2: Convert to fraction form
   42,126,890.40/59,057,272.80 = 42,126,890.40/x
3. Step 3: Cross multiply
   42,126,890.40x = 59,057,272.80 × 42,126,890.40
4. Step 4: Simplify right side
   42,126,890.40x = 2,487,899,258,568,501
5. Step 5: Solve for x
   x = 2,487,899,258,568,501/42,126,890.40
6. Step 6: Final answer
   x = 59,057,272.80