Finding the Fourth Proportional to 61,101,690.71, 91,076,926.50 and 56,198,409.37

Step by Step Solution

1. Step 1: Write the proportion equation
   61,101,690.71 : 91,076,926.50 = 56,198,409.37 : x
2. Step 2: Convert to fraction form
   61,101,690.71/91,076,926.50 = 56,198,409.37/x
3. Step 3: Cross multiply
   61,101,690.71x = 91,076,926.50 × 56,198,409.37
4. Step 4: Simplify right side
   61,101,690.71x = 5,118,378,399,380,709
5. Step 5: Solve for x
   x = 5,118,378,399,380,709/61,101,690.71
6. Step 6: Final answer
   x = 83,768,195.94