Finding the Fourth Proportional to 56,543,147.39, 78,032,876.47 and 42,579,867.27

Step by Step Solution

1. Step 1: Write the proportion equation
   56,543,147.39 : 78,032,876.47 = 42,579,867.27 : x
2. Step 2: Convert to fraction form
   56,543,147.39/78,032,876.47 = 42,579,867.27/x
3. Step 3: Cross multiply
   56,543,147.39x = 78,032,876.47 × 42,579,867.27
4. Step 4: Simplify right side
   56,543,147.39x = 3,322,629,522,788,906.50
5. Step 5: Solve for x
   x = 3,322,629,522,788,906.50/56,543,147.39
6. Step 6: Final answer
   x = 58,762,726.81