Finding the Fourth Proportional to 78,125.98, 117,091.50 and 38,111.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,125.98 : 117,091.50 = 38,111.98 : x
2. Step 2: Convert to fraction form
   78,125.98/117,091.50 = 38,111.98/x
3. Step 3: Cross multiply
   78,125.98x = 117,091.50 × 38,111.98
4. Step 4: Simplify right side
   78,125.98x = 4,462,588,906.17
5. Step 5: Solve for x
   x = 4,462,588,906.17/78,125.98
6. Step 6: Final answer
   x = 57,120.42