Finding the Fourth Proportional to 42,906,495.10, 64,356,790.20 and 13,759,908.70

Step by Step Solution

1. Step 1: Write the proportion equation
   42,906,495.10 : 64,356,790.20 = 13,759,908.70 : x
2. Step 2: Convert to fraction form
   42,906,495.10/64,356,790.20 = 13,759,908.70/x
3. Step 3: Cross multiply
   42,906,495.10x = 64,356,790.20 × 13,759,908.70
4. Step 4: Simplify right side
   42,906,495.10x = 885,543,557,377,054.75
5. Step 5: Solve for x
   x = 885,543,557,377,054.75/42,906,495.10
6. Step 6: Final answer
   x = 20,638,916.21