Finding the Fourth Proportional to 78,745.04, 118,118.00 and 19,580.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,745.04 : 118,118.00 = 19,580.72 : x
2. Step 2: Convert to fraction form
   78,745.04/118,118.00 = 19,580.72/x
3. Step 3: Cross multiply
   78,745.04x = 118,118.00 × 19,580.72
4. Step 4: Simplify right side
   78,745.04x = 2,312,834,943.32
5. Step 5: Solve for x
   x = 2,312,834,943.32/78,745.04
6. Step 6: Final answer
   x = 29,371.18