Finding the Fourth Proportional to 42,017,079.66, 58,031,399.52 and 28,242,128.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017,079.66 : 58,031,399.52 = 28,242,128.94 : x
2. Step 2: Convert to fraction form
   42,017,079.66/58,031,399.52 = 28,242,128.94/x
3. Step 3: Cross multiply
   42,017,079.66x = 58,031,399.52 × 28,242,128.94
4. Step 4: Simplify right side
   42,017,079.66x = 1,638,930,267,812,494.25
5. Step 5: Solve for x
   x = 1,638,930,267,812,494.25/42,017,079.66
6. Step 6: Final answer
   x = 39,006,286.99