Finding the Fourth Proportional to 42,321,013.77, 58,343,961.80 and 28,384,859.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,321,013.77 : 58,343,961.80 = 28,384,859.28 : x
2. Step 2: Convert to fraction form
   42,321,013.77/58,343,961.80 = 28,384,859.28/x
3. Step 3: Cross multiply
   42,321,013.77x = 58,343,961.80 × 28,384,859.28
4. Step 4: Simplify right side
   42,321,013.77x = 1,656,085,145,530,695.50
5. Step 5: Solve for x
   x = 1,656,085,145,530,695.50/42,321,013.77
6. Step 6: Final answer
   x = 39,131,509.34