Finding the Fourth Proportional to 133,060.89, 183,616.29 and 72,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,060.89 : 183,616.29 = 72,619.50 : x
2. Step 2: Convert to fraction form
   133,060.89/183,616.29 = 72,619.50/x
3. Step 3: Cross multiply
   133,060.89x = 183,616.29 × 72,619.50
4. Step 4: Simplify right side
   133,060.89x = 13,334,123,171.66
5. Step 5: Solve for x
   x = 13,334,123,171.66/133,060.89
6. Step 6: Final answer
   x = 100,210.69