Finding the Fourth Proportional to 42,692,293.08, 64,040,211.72 and 12,400,156.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,692,293.08 : 64,040,211.72 = 12,400,156.08 : x
2. Step 2: Convert to fraction form
   42,692,293.08/64,040,211.72 = 12,400,156.08/x
3. Step 3: Cross multiply
   42,692,293.08x = 64,040,211.72 × 12,400,156.08
4. Step 4: Simplify right side
   42,692,293.08x = 794,108,620,724,245.25
5. Step 5: Solve for x
   x = 794,108,620,724,245.25/42,692,293.08
6. Step 6: Final answer
   x = 18,600,748.83