Finding the Fourth Proportional to 56,543,142.63, 78,032,869.91 and 42,579,862.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,543,142.63 : 78,032,869.91 = 42,579,862.52 : x
2. Step 2: Convert to fraction form
   56,543,142.63/78,032,869.91 = 42,579,862.52/x
3. Step 3: Cross multiply
   56,543,142.63x = 78,032,869.91 × 42,579,862.52
4. Step 4: Simplify right side
   56,543,142.63x = 3,322,628,872,808,845
5. Step 5: Solve for x
   x = 3,322,628,872,808,845/56,543,142.63
6. Step 6: Final answer
   x = 58,762,720.26