Finding the Fourth Proportional to 57,091,145.79, 78,785,859.15 and 30,985,663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   57,091,145.79 : 78,785,859.15 = 30,985,663.98 : x
2. Step 2: Convert to fraction form
   57,091,145.79/78,785,859.15 = 30,985,663.98/x
3. Step 3: Cross multiply
   57,091,145.79x = 78,785,859.15 × 30,985,663.98
4. Step 4: Simplify right side
   57,091,145.79x = 2,441,232,157,997,508.50
5. Step 5: Solve for x
   x = 2,441,232,157,997,508.50/57,091,145.79
6. Step 6: Final answer
   x = 42,760,258.60