Finding the Fourth Proportional to 85,840,300.02, 128,817,171.63 and 40,415,085.30

Step by Step Solution

1. Step 1: Write the proportion equation
   85,840,300.02 : 128,817,171.63 = 40,415,085.30 : x
2. Step 2: Convert to fraction form
   85,840,300.02/128,817,171.63 = 40,415,085.30/x
3. Step 3: Cross multiply
   85,840,300.02x = 128,817,171.63 × 40,415,085.30
4. Step 4: Simplify right side
   85,840,300.02x = 5,206,156,979,531,189
5. Step 5: Solve for x
   x = 5,206,156,979,531,189/85,840,300.02
6. Step 6: Final answer
   x = 60,649,333.45