Finding the Fourth Proportional to 133,061.89, 183,617.67 and 72,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,061.89 : 183,617.67 = 72,620.50 : x
2. Step 2: Convert to fraction form
   133,061.89/183,617.67 = 72,620.50/x
3. Step 3: Cross multiply
   133,061.89x = 183,617.67 × 72,620.50
4. Step 4: Simplify right side
   133,061.89x = 13,334,407,004.24
5. Step 5: Solve for x
   x = 13,334,407,004.24/133,061.89
6. Step 6: Final answer
   x = 100,212.07