Finding the Fourth Proportional to 30,341,488.50, 45,512,276.55 and 12,390,592.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,341,488.50 : 45,512,276.55 = 12,390,592.50 : x
2. Step 2: Convert to fraction form
   30,341,488.50/45,512,276.55 = 12,390,592.50/x
3. Step 3: Cross multiply
   30,341,488.50x = 45,512,276.55 × 12,390,592.50
4. Step 4: Simplify right side
   30,341,488.50x = 563,924,072,478,355.88
5. Step 5: Solve for x
   x = 563,924,072,478,355.88/30,341,488.50
6. Step 6: Final answer
   x = 18,585,906.64