Finding the Fourth Proportional to 133,300.76, 183,956.27 and 72,870.30

Step by Step Solution

1. Step 1: Write the proportion equation
   133,300.76 : 183,956.27 = 72,870.30 : x
2. Step 2: Convert to fraction form
   133,300.76/183,956.27 = 72,870.30/x
3. Step 3: Cross multiply
   133,300.76x = 183,956.27 × 72,870.30
4. Step 4: Simplify right side
   133,300.76x = 13,404,948,217.43
5. Step 5: Solve for x
   x = 13,404,948,217.43/133,300.76
6. Step 6: Final answer
   x = 100,561.68