Finding the Fourth Proportional to 85,803,680.34, 128,533,196.07 and 39,680,900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   85,803,680.34 : 128,533,196.07 = 39,680,900.10 : x
2. Step 2: Convert to fraction form
   85,803,680.34/128,533,196.07 = 39,680,900.10/x
3. Step 3: Cross multiply
   85,803,680.34x = 128,533,196.07 × 39,680,900.10
4. Step 4: Simplify right side
   85,803,680.34x = 5,100,312,912,787,383
5. Step 5: Solve for x
   x = 5,100,312,912,787,383/85,803,680.34
6. Step 6: Final answer
   x = 59,441,656.73