Finding the Fourth Proportional to 139,211.00, 192,111.31 and 75,548.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,211.00 : 192,111.31 = 75,548.80 : x
2. Step 2: Convert to fraction form
   139,211.00/192,111.31 = 75,548.80/x
3. Step 3: Cross multiply
   139,211.00x = 192,111.31 × 75,548.80
4. Step 4: Simplify right side
   139,211.00x = 14,513,779,271.50
5. Step 5: Solve for x
   x = 14,513,779,271.50/139,211.00
6. Step 6: Final answer
   x = 104,257.42