Finding the Fourth Proportional to 131,782,068.28, 181,858,939.50 and 72,243,259.48

Step by Step Solution

1. Step 1: Write the proportion equation
   131,782,068.28 : 181,858,939.50 = 72,243,259.48 : x
2. Step 2: Convert to fraction form
   131,782,068.28/181,858,939.50 = 72,243,259.48/x
3. Step 3: Cross multiply
   131,782,068.28x = 181,858,939.50 × 72,243,259.48
4. Step 4: Simplify right side
   131,782,068.28x = 13,138,082,555,056,122
5. Step 5: Solve for x
   x = 13,138,082,555,056,122/131,782,068.28
6. Step 6: Final answer
   x = 99,695,525.55