Finding the Fourth Proportional to 65,404,402,521.21, 90,274,868,879.73 and 42,598,370,804.31

Step by Step Solution

1. Step 1: Write the proportion equation
   65,404,402,521.21 : 90,274,868,879.73 = 42,598,370,804.31 : x
2. Step 2: Convert to fraction form
   65,404,402,521.21/90,274,868,879.73 = 42,598,370,804.31/x
3. Step 3: Cross multiply
   65,404,402,521.21x = 90,274,868,879.73 × 42,598,370,804.31
4. Step 4: Simplify right side
   65,404,402,521.21x = 3,845,562,338,849,203,421,184
5. Step 5: Solve for x
   x = 3,845,562,338,849,203,421,184/65,404,402,521.21
6. Step 6: Final answer
   x = 58,796,689,375.80