Finding the Fourth Proportional to 31,015,503.81, 42,800,685.71 and 19,419,461.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,015,503.81 : 42,800,685.71 = 19,419,461.19 : x
2. Step 2: Convert to fraction form
   31,015,503.81/42,800,685.71 = 19,419,461.19/x
3. Step 3: Cross multiply
   31,015,503.81x = 42,800,685.71 × 19,419,461.19
4. Step 4: Simplify right side
   31,015,503.81x = 831,166,254,953,635.25
5. Step 5: Solve for x
   x = 831,166,254,953,635.25/31,015,503.81
6. Step 6: Final answer
   x = 26,798,412.18