Finding the Fourth Proportional to 31,019,442.30, 42,778,963.62 and 19,418,063.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,019,442.30 : 42,778,963.62 = 19,418,063.40 : x
2. Step 2: Convert to fraction form
   31,019,442.30/42,778,963.62 = 19,418,063.40/x
3. Step 3: Cross multiply
   31,019,442.30x = 42,778,963.62 × 19,418,063.40
4. Step 4: Simplify right side
   31,019,442.30x = 830,684,627,759,453.38
5. Step 5: Solve for x
   x = 830,684,627,759,453.38/31,019,442.30
6. Step 6: Final answer
   x = 26,779,483.00