Finding the Fourth Proportional to 133,061.41, 199,677.77 and 53,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   133,061.41 : 199,677.77 = 53,085.72 : x
2. Step 2: Convert to fraction form
   133,061.41/199,677.77 = 53,085.72/x
3. Step 3: Cross multiply
   133,061.41x = 199,677.77 × 53,085.72
4. Step 4: Simplify right side
   133,061.41x = 10,600,038,188.44
5. Step 5: Solve for x
   x = 10,600,038,188.44/133,061.41
6. Step 6: Final answer
   x = 79,662.75