Finding the Fourth Proportional to 79,081,993.90, 118,640,877.78 and 42,689,603.13

Step by Step Solution

1. Step 1: Write the proportion equation
   79,081,993.90 : 118,640,877.78 = 42,689,603.13 : x
2. Step 2: Convert to fraction form
   79,081,993.90/118,640,877.78 = 42,689,603.13/x
3. Step 3: Cross multiply
   79,081,993.90x = 118,640,877.78 × 42,689,603.13
4. Step 4: Simplify right side
   79,081,993.90x = 5,064,731,987,423,036
5. Step 5: Solve for x
   x = 5,064,731,987,423,036/79,081,993.90
6. Step 6: Final answer
   x = 64,044,060.32