Finding the Fourth Proportional to 56,990,043.79, 78,646,327.68 and 30,884,561.47

Step by Step Solution

1. Step 1: Write the proportion equation
   56,990,043.79 : 78,646,327.68 = 30,884,561.47 : x
2. Step 2: Convert to fraction form
   56,990,043.79/78,646,327.68 = 30,884,561.47/x
3. Step 3: Cross multiply
   56,990,043.79x = 78,646,327.68 × 30,884,561.47
4. Step 4: Simplify right side
   56,990,043.79x = 2,428,957,341,622,722.50
5. Step 5: Solve for x
   x = 2,428,957,341,622,722.50/56,990,043.79
6. Step 6: Final answer
   x = 42,620,731.27