Finding the Fourth Proportional to 72,384,085.14, 99,938,137.98 and 55,608,947.64

Step by Step Solution

1. Step 1: Write the proportion equation
   72,384,085.14 : 99,938,137.98 = 55,608,947.64 : x
2. Step 2: Convert to fraction form
   72,384,085.14/99,938,137.98 = 55,608,947.64/x
3. Step 3: Cross multiply
   72,384,085.14x = 99,938,137.98 × 55,608,947.64
4. Step 4: Simplify right side
   72,384,085.14x = 5,557,454,682,168,916
5. Step 5: Solve for x
   x = 5,557,454,682,168,916/72,384,085.14
6. Step 6: Final answer
   x = 76,777,300.86