Finding the Fourth Proportional to 380,084.96, 570,131.76 and 99,630.56

Step by Step Solution

1. Step 1: Write the proportion equation
   380,084.96 : 570,131.76 = 99,630.56 : x
2. Step 2: Convert to fraction form
   380,084.96/570,131.76 = 99,630.56/x
3. Step 3: Cross multiply
   380,084.96x = 570,131.76 × 99,630.56
4. Step 4: Simplify right side
   380,084.96x = 56,802,546,522.59
5. Step 5: Solve for x
   x = 56,802,546,522.59/380,084.96
6. Step 6: Final answer
   x = 149,446.97