Finding the Fourth Proportional to 56,543,146.69, 78,032,875.49 and 42,579,866.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,543,146.69 : 78,032,875.49 = 42,579,866.56 : x
2. Step 2: Convert to fraction form
   56,543,146.69/78,032,875.49 = 42,579,866.56/x
3. Step 3: Cross multiply
   56,543,146.69x = 78,032,875.49 × 42,579,866.56
4. Step 4: Simplify right side
   56,543,146.69x = 3,322,629,425,657,294.50
5. Step 5: Solve for x
   x = 3,322,629,425,657,294.50/56,543,146.69
6. Step 6: Final answer
   x = 58,762,725.81