Finding the Fourth Proportional to 78,736.61, 118,152.71 and 31,988.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,736.61 : 118,152.71 = 31,988.27 : x
2. Step 2: Convert to fraction form
   78,736.61/118,152.71 = 31,988.27/x
3. Step 3: Cross multiply
   78,736.61x = 118,152.71 × 31,988.27
4. Step 4: Simplify right side
   78,736.61x = 3,779,500,788.71
5. Step 5: Solve for x
   x = 3,779,500,788.71/78,736.61
6. Step 6: Final answer
   x = 48,001.82