Finding the Fourth Proportional to 42,807.93, 59,070.91 and 28,982.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807.93 : 59,070.91 = 28,982.13 : x
2. Step 2: Convert to fraction form
   42,807.93/59,070.91 = 28,982.13/x
3. Step 3: Cross multiply
   42,807.93x = 59,070.91 × 28,982.13
4. Step 4: Simplify right side
   42,807.93x = 1,712,000,678.59
5. Step 5: Solve for x
   x = 1,712,000,678.59/42,807.93
6. Step 6: Final answer
   x = 39,992.61