Finding the Fourth Proportional to 56,111,965.08, 77,487,991.32 and 53,055,020.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,111,965.08 : 77,487,991.32 = 53,055,020.20 : x
2. Step 2: Convert to fraction form
   56,111,965.08/77,487,991.32 = 53,055,020.20/x
3. Step 3: Cross multiply
   56,111,965.08x = 77,487,991.32 × 53,055,020.20
4. Step 4: Simplify right side
   56,111,965.08x = 4,111,126,944,740,024.50
5. Step 5: Solve for x
   x = 4,111,126,944,740,024.50/56,111,965.08
6. Step 6: Final answer
   x = 73,266,493.86