Finding the Fourth Proportional to 42,820,552, 64,218,230.88 and 12,521,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,820,552 : 64,218,230.88 = 12,521,212.48 : x
2. Step 2: Convert to fraction form
   42,820,552/64,218,230.88 = 12,521,212.48/x
3. Step 3: Cross multiply
   42,820,552x = 64,218,230.88 × 12,521,212.48
4. Step 4: Simplify right side
   42,820,552x = 804,090,113,938,177.50
5. Step 5: Solve for x
   x = 804,090,113,938,177.50/42,820,552
6. Step 6: Final answer
   x = 18,778,135.18